The Competitiveness of Nations in a Global Knowledge-Based Economy
The Economic Theory Concerning Patents for Inventions 
1
(Ernest Cassel Professor of Commerce in the 
Economica, New Series, 1 
(1)
Feb., 1934, 
30-51.
PATENTS
 for inventions comprise a special form of property, 
created by .statute law.  In the 
United Kingdom, for -instance, patents “sealed with the seal of the 
Patent Office [which] shall have the same effect as if it were sealed with the 
Great Seal of the United Kingdom, and shall have effect throughout the United 
Kingdom and the Isle of Man” are granted under the Patents and Designs 
Acts, 1907 to 1932, every patent relating to 
one invention only and having a duration of sixteen years in the first instance; 
subject to fulfillment of the conditions laid down in the 
Acts.
The statutes creating patents in the various countries 
impose limitations on the exercise of the property rights which they comprise, 
but these are not the only peculiarities of this form of property.  Despite the limitations, property rights 
in patents are more potent than is generally true of private property.  The significance of private property in 
the economic system was enunciated long ago with great clarity by David Hume in 
his Enquiry Concerning the Principles of Morals.  Property, he argued, has no purpose 
where there is abundance; it arises, and derives its significance, out of the 
scarcity of the objects which become appropriated, in a world in which people 
desire to benefit from their own work and sacrifice.  Systems of Justice, he went on, protect 
property rights solely on account of their utility.  Where the security of property is 
adequately assured, property owners generally see to it, that scarce “means” 
are directed to those uses which, within their knowledge and judgment, are 
most productive of what they want.  Such is the diffusion of private property 
and of the desire to use it, that it is at any rate generally true that there is 
not a
1. Substantially a paper read before Section F of the 
British Association at 
30
sufficient concentration of ownership of the supplies of 
a particular good, and of all the easily substitutable alternatives for it, to 
enable the owners to control the prices of the property they own.  Neither the withholding, nor the disposal 
of the property of any one owner will in general affect appreciably the price of 
the commodity in question.  Hitherto, this inability of property 
owners to control prices has been generally approved.  If we except recent tendencies towards 
“planned monopolies,” most proposals to interfere with property rights have been 
aimed in the past at prohibiting the concentration of supplies of particular 
commodities under a single ownership, in order to prevent the property owners 
from raising the price by withholding part of the supply.
It is a peculiarity of property rights in patents (and 
copyrights) that they do not arise out of the scarcity of the objects which 
become appropriated.  They are not a 
consequence of scarcity.  They are the deliberate creation of 
statute law; and, whereas in general the institution of private property makes 
for the preservation of scarce goods, tending (as we might somewhat loosely say) 
to lead us “to make the most of them,” property rights in patents and copyright 
make possible the creation of a scarcity of the products appropriated 
which could not otherwise be maintained.  Whereas we might expect that public 
action concerning private property would normally be directed at the prevention 
of the raising of prices, in these cases the object of the legislation is to 
confer the power of raising prices by enabling the creation of scarcity.  The beneficiary is made the owner of the 
entire supply of a product for which there may be no easily obtainable 
substitute.  It is the intention of 
the legislators that he shall be placed in a position to secure an income from 
the monopoly conferred upon him by restricting the supply in order to raise the 
price.
4. 
Expectations of the Patent System
It may be assumed that the statutes creating these 
patent and copyright monopolies would not have been placed, or allowed to 
remain, upon the statute books in the absence of a widespread expectation of 
public advantage from their operation.  Economists have of recent years found new 
difficulties in stating the effects of monopoly upon the magnitude of the 
national income, but it is nevertheless still broadly accepted that monopoly 
conditions tend to promote the diversion of the scarce means of production from 
a more to a less generally preferred utilisation.  It is of interest, therefore, to review 
the expectations of those who approve of the patent system, 
to
31
consider the implications of those expectations, and the 
extent to which they have been realised.  Are those expectations reasonable in 
themselves?  Are the devices which 
have been adopted for their realisation appropriate?  Has their operation resulted in 
objectionable consequences which may not have been 
foreseen?
As we have seen, the purpose of patents for inventions 
is, by giving an inventor the control for a definite period over the disposal of 
his invention, to make it easier for him to derive an income from it.  With what objects ?  As soon as we enter into an examination 
of motive, we are, of course, venturing upon uncertain and debatable ground. 
 It will, nevertheless, I think, be 
generally agreed that the ultimate aim is to encourage inventing.  This is undoubtedly the expectation and 
hope of the vast majority of disinterested advocates of patents.  The aim of all advocates, whether 
inventors themselves or not, is to make inventing pay better, and those at any 
rate who are not inventors hope for more inventions as a consequence.  Even those supporters of the patent 
system who would describe their argument as purely ethical in character would 
probably agree that their ultimate concern is that inventors, qua 
inventors, should be enabled to survive.  They may argue that their concern is to 
see that producers of inventions are not robbed of that which ought to be, even 
if it may not be in common law, their property; and yet their interest in 
inventors is very likely derived from a more fundamental belief that inventions 
are especially good in themselves, that the production and utilisation of 
inventions ought, therefore, to be encouraged, and that the way to attain that 
end is to extend the sphere of private property so as to increase the 
profitability of “inventing,” and of the exploitation of inventions, as compared 
with other occupations.  We are 
surely entitled, therefore, to attribute the existence of the patent law to a 
desire to stimulate invention.
In order to examine the effects of the patent system on 
invention it is, therefore, necessary first of all to ask what determines the 
amount of invention that takes place, and we must start with a working 
definition of “invention.”  To give 
it a wide enough meaning - much more comprehensive, by the way, than that to 
which patent law has come to be applied - invention is the devising of new ways 
of attaining given ends.  We might 
widen the definition still further, by including the devising or suggesting of 
new ends themselves as inventions, but this would probably involve too great a 
departure from
32
ordinary usage.  We may all agree that a new machine for 
making cigarettes is an invention but that a suggestion for the abandonment of 
cigarette-smoking in favour of something else is not.  If we definite invention as the devising 
of new ways of attaining given ends it will be best to make the “given ends” as 
concrete as possible by excluding from the category of “invention” any change in 
consumers’ taste.
This somewhat comprehensive definition of invention 
enables us to include, as we surely must, all new ways of attaining given ends, 
although many may not be immediately, if ever, adopted.  A new device, employing a recently 
discovered and revolutionary scientific principle, may be mechanically 
excellent, and yet not capable of commercial exploitation.  The time and extent of its adoption will 
depend upon price conditions.  Changes in relative prices may lead to 
the abandonment of one much utilised process and the substitution of another, 
devised long since but never before adopted.
8. Autonomous 
and Induced Invention
A useful distinction has been drawn by Professor Pigou 
between different types of change in economic conditions (and has been applied 
to inventions by Dr. J. R. Hicks), distinguishing those which are “autonomous,” 
occurring spontaneously rather than in response to any environmental impulse, 
from those which are “induced” by environmental changes and owe their origin 
therefore to circumstance.  Different writers have assessed very 
differently the relative importance, as regards their number, of inventions 
which fall into these two categories, and when we carry the analysis a step 
farther, and attempt a classification, within the second category, of the 
various circumstances which may induce invention, still more difference of 
emphasis is revealed in the views of the various 
authorities.
9. 
Spontaneous or Autonomous Invention
Spontaneous or “autonomous” inventions include those 
which arise from the existence of what Professor Taussig calls the “instinct of 
contrivance.”  So far as these are 
concerned, necessity is not the mother of invention; the act of inventing rather 
is a necessity in itself.  The 
inventor cannot help it.  Just as 
some people, who may never be recognised as poets, continue to pour out volumes 
of verse, so others may spend their time or part of it in devising contrivances 
or- inventions.  Sir Josiah Stamp in 
his stimulating essay on Invention (Watt Anniversary Lecture, Greenock, 
1928, reprinted in Some Economic Factors in Modern Life) inclines to the 
view that the flow of invention is largely explained in this way. 
‘The
33
inventor,’ he says, ‘is still sui generis, and 
emerges from the ranks of engineers, physicists, and chemists, not indeed as a 
“sport,” but as a special product, which is touched by no “economic spring.” 
 The sense of curiosity and the idea 
of fame play a greater part than the economic reward.’  Not all of the inventors, however, whose 
output is involuntary, are impervious to prospects of gain.  Like artists, some may turn their talent 
to profitable use.  The amount and 
rate of flow may be invariable, but its direction may be influenced by 
inducements of one sort or another.  Inventing may be spontaneous, but the 
nature or form that it takes may be controlled by circumstance.  It will probably be generally agreed that 
the number of “involuntary inventors” whose output is completely unaffected by 
economic conditions is at least as small as that of artists who work without 
regard to the saleability of their output.
More definitely in the category of “spontaneous” 
inventions are those which are made by accident, for the most part no doubt as 
the chance by-product of activity directed to some other purpose.  Every scientific worker knows how 
frequently an enquiry leads to discoveries which answer questions very different 
from those which prompted the investigation.  Undoubtedly, in the field of invention, 
contrivances are accidentally hit upon in the same way; but in all probability, 
the majority of these “chance” inventions are also indirectly “induced” - one 
stage removed, as it were - for the greater part of the activity out of which 
they arise is influenced by circumstance.  Of a somewhat similar character, again, 
are the inventions of “amateurs” who, when inspecting the specialised technique 
of a particular field of production, being prompted by curiosity rather than 
hope of gain, are enabled by their unusual possession of experience of some 
other technique to suggest improvements and new devices which fail to occur to 
the minds- of practitioners themselves.  The timing, at least, of such inventions 
is undoubtedly largely fortuitous.
Induced inventions owe at any rate their nature, if not 
their volume, to the circumstances of time and place.  One very potent cause affecting the 
amount of inventions is clearly the rate of growth of scientific knowledge. 
 The greater the volume of new 
scientific discoveries, the more rapid will become the rate of application of 
these discoveries by inventors to purposes of production.  Invention does not, of course, wait upon 
the completion of scientific discovery.  As William Edward Hearn wrote seventy 
years ago, in what is surely still
34
the best theoretical discussion “Of the Circumstances 
which Determine the Extent of Invention” (in his Plutology, ch. 
xi): “The knowledge that is imperfect for the purposes of speculation is often a 
sufficient guide for the daily business of life.”  “Even at the present day,” he adds, “many 
processes of our most successful arts have not yet received a scientific 
explanation. … But in all empirical arts, the limit of improvement is soon 
reached.”
11. 
Specialisation & Division of Labour
A second influence on the nature, if not on the volume, 
of new invention is specialisation and the division of 
labour.
The specialisation which has been made possible by the 
great increase in the number of scientific workers has in itself tended to 
increase the rate of scientific discovery.  Similarly, the division of labour in 
production has exerted an influence on invention.  Adam Smith made the point perhaps too 
forcibly (Wealth of Nations, Book I, ch. i) when he observed that “the 
invention of all machines by which labour is so much facilitated and abridged, 
seems to have been originally owing to the division of labour.”  W. E. Hearn and, following him, W. S. 
Jevons (Principles of Economics) both criticised the extravagance of 
Smith’s language, calling, attention to the number of important inventions which 
have emanated from unexpected quarters.  Yet they did not deny the obvious truth 
that specialisation in product and the division of labour make possible the 
detailed consideration of technological processes, and that inventions of new 
processes do arise out of such continuous and intimate consideration of 
detail.  Whether there is in 
consequence a net addition to the volume of invention, as distinct from a 
change in its nature, is another matter.
It is true that the growing mechanisation of industry 
withdraws ever more of the active and trained minds from actual machine 
operation and may in that way reduce the number of inventions that would 
otherwise be made in that field, but it would be a very incomplete account of 
the effects of the division of labour on invention that stopped there.  Specialisation has, of course, released 
the more able and ingenious and mentally alert workers from routine tasks for 
the performance of just such special tasks as inventing.  It has made possible the career of 
professional “inventor.”  It 
has moreover resulted in the increased wealth of communities, which has made 
possible the increase of knowledge by the endowment of research, and the spread 
of knowledge and the training of ability by the endowment of education. These 
in
35
turn have increased on the one hand the field for 
invention, and on the other hand, the number of active 
inventors.
Increasing wealth, the division of labour, the progress 
of science, then, are clearly circumstances which induce in these various ways 
the invention of new processes and devices.  It remains to add another circumstance, 
which provides the incentive for the making of particular inventions, and that 
is the existence of favourable price conditions.  Dispute there may well be as to the 
effect of price changes, and of the consequent emergence of new opportunities 
for profit and new probabilities of loss, on the volume of invention that 
takes place as a whole in a given period, but as to the important directive 
influence of price conditions upon by far the greater part of inventive 
effort there can be no doubt at all.  Hearn wrote: “The principal circumstance 
which affects the progress of inventions is the strength of the motive for their 
use.  When the demand is 
sufficiently strong, the supply generally overtakes it…”  The price conditions which induce 
invention in particular fields are those which offer a special return to 
inventors in those fields.  The 
inventions may be induced either by the possibility of quite exceptional profits 
to those who can cut costs still further during times of flourishing trade, when 
an industry is already profitable, or by the imminence of certain loss to 
entrepreneurs who have fixed investments in industries which are depressed, and 
whose only hope is an innovation which will reduce expenses below receipts. 
 During the post-war years, for 
instance, inventions have been induced by price conditions in both the coal 
industry and the rubber industry on the one hand, and in the motor-car and radio 
industries on the other.
Hitherto, the interest of economists in the relation 
between inventions and industrial fluctuations has been concentrated mainly on 
the part played by inventions in the causation of fluctuations.  (Cf., e.g. Mr. D. H. Robertson’s Study 
of Industrial Fluctuations, and Professor Pigou’s Industrial 
Fluctuations.)  The problem of 
the reverse effects of business fluctuations on the flow of inventions is a no 
less fascinating subject of study, about, which a number of unargued and 
contradictory statements have been made.  It is important to distinguish between 
the making of an invention and its adoption.  Sir Josiah Stamp, in the paper already 
referred to, says: “On the whole I incline to the view that the periods of rapid 
and important invention tend to be periods of larger 
differential
36
profits.”  The view is not supported in the paper by 
evidence or argument.  Professor 
Pigou in his Industrial Fluctuations (ch. iv, p.43) is concerned mainly to refute the 
proposition that fluctuations in general business activity may be initiated by 
variations in the rate at which ordinary minor inventions and improvements are 
made.  He argues that even in the 
case of major inventions it is the decision to exploit inventions rather than 
the making of the inventions itself that is the major cause of disturbance, the 
time and intensity of exploitation being largely determined by the state of 
business confidence.  “There is,” he 
says, “… a strong probability that invention as a whole will fluctuate very much 
less than invention in any given representative occupation,” - i.e. he implies 
that there is a transfer of inventive activity from one industry to another, 
expansions in one field being compensated more or less by declines in invention 
elsewhere; and he states definitely that “there is evidence that in slack 
periods technical devices and improvements accumulate in the sphere of 
knowledge, but are not exploited till times improve.”  The nature of the evidence is not stated. 
 It presumably relates to the 
statistics concerning the rate of exploitation rather than of invention itself. 
 Such an accumulation of inventions 
during depressions is compatible with increasing, stationary or declining 
absolute rates of invention, being purely relative to the rate of exploitation, 
which one might reasonably expect to decline when business confidence is at a 
low ebb.  It is of interest to 
notice, however, that elsewhere in the same study (p. 12) Professor Pigou asserts 
that “in periods of depression the amount of intelligence put into 
production is, in general, larger, partly because relatively inefficient 
business men are compelled to sell out to others, but mainly because those who 
remain in business ‘are put on their mettle, and exert themselves to the utmost 
to invent improved methods, and to avail themselves of the improvements made by 
others.’”  This would imply an 
increased rate of both invention and exploitation during depressions, at 
least on the part of those who remain in business. [1
1. I cannot trace any attempt hitherto at statistical 
investigation of the relationship between disturbances in industrial activity 
and variations in the rate of invention.  Professor Pigou, having in mind, of 
course, the reverse connection, considers that “it is not in fact possible to 
demonstrate a close statistical correlation between the making of industrial 
inventions and neighbouring disturbances in general industrial activity.” 
 That may well prove to be true. 
 I am myself much disposed after 
somewhat close and prolonged study to hope that the detailed records of patent 
applications available over a long period in this and other countries can be 
made to throw light on this and the other related questions.  The returns are available separately for 
different [categories of industry (in this country, for 
instance, over a long period, there are 146 categories), those 
concerning provisional applications provide excellent evidence of the date at 
which inventions are made, and the subsequent history of the patents can be used 
for a study of the timing of the actual exploitation.  In particular instances, the, influence 
of adversity as well as of prosperity within an industry upon the display of 
inventiveness can easily be traced beyond reasonable doubt.  With due, care it may be possible also 
to draw conclusions with regard to the relation between the display of 
inventiveness and industrial fluctuations in general.  The work is progressing, but further 
discussion must be reserved for another occasion.]
HHC: [bracketed] 
displayed on p. 38 of original
37
15. 
Conclusions About Induced Invention
In the meantime certain conclusions may be hazarded 
concerning induced inventions; firstly, that every price change, by creating 
cost difficulties in certain fields and opportunities for profit-making in 
others, provides a double stimulus to invention, and secondly that the larger 
the price change the greater will be the stimulus to invent.  Thirdly, during periods of disturbance of 
the general level of prices, a more general stimulus to inventions and to the 
exploitation of existing inventions may be expected, for we know that individual 
price relationships are disturbed whenever, for monetary reasons, the general 
price level shifts.  Fourthly, any 
government measures designed especially to reward inventors whether by 
subsidisation or by the patent system, i.e. the grant of monopoly rights over 
the utilisation of their inventions, may be expected, because of their influence 
upon price conditions, to affect the flow of inventions.  It is with the patent system that we are 
here primarily concerned.  Despite 
the publication of a large body of specialist literature, in the nineteenth 
century in particular, on the merits of patent systems, they have received scant 
attention by economists in the standard treatises.
The patent system may, on the one hand, be expected to 
affect the making of inventions in two ways.  The first is to divert inventive activity 
into those fields in which the monopoly grant will be expected to prove most 
remunerative.  It may, secondly, 
affect the total amount of inventive activity.  The patent system may, on the other 
hand, exercise another effect of perhaps equal importance.  It may influence the ability or 
willingness of entrepreneurs to make use of new inventions after they have been 
made.
It will be convenient to consider first the effect of 
the patent system on the amount of inventive activity.  Considerable difference of opinion on 
this aspect of the question is revealed by the scant references made by 
economists who go out of their way to praise the patent system.  On the one hand there-is the view, 
perhaps best represented in our own time by
38
Professor J. B. Clark in his Essentials of Economic 
Theory (ch. xxi), that without the patent system there would be very little 
inventing, and very little adoption of inventions by producers, at all.  “If an invention became public property 
the moment that it was made,” he says, “there would be small profit accruing to 
any one from the use of it and smaller ones from making it… The system 
which gave a man no control over the use of his inventions would result in a 
rivalry in waiting for others rather than an effort to distance others in 
originating improvements.  This fact 
affords a justification for one variety of monopoly. … Patents stimulate 
improvement, and the general practice of the nations indicates their recognition 
of this fact.”  For the expression 
of a very different view we may turn to Professor F. W. Taussig (Inventors and Money-Makers), 
who throws doubt upon what he designates as the view of the older 
utilitarians, that “men contrived simply because this was conducive to 
gain, and would not contrive unless prompted by the experience and prospect of 
gain,” and suggests instead that invention may arise mainly as a spontaneous 
manifestation of a human “instinct of contrivance.”  If this is so, “we may be led to 
conclude,” he adds, although it is not his conclusion, “that the patent system, 
for example, is a huge mistake.”  Later, he observes that “the 
defenders of patent legislation often descant on the public benefit from 
inventions as if there were a special moral desert on the part of the projectors 
and patentees.  They put their case 
badly.  What deserves emphasis is 
the influence of calculated profit in directing the inventor’s activity, 
spontaneous though it be, into channels of general usefulness.”  The patent system is commended because it 
directs rather than increases inventing activity.  Professor Pigou puts the same view still 
more definitely (Economics of Welfare, 2nd edition, Part II, chapter 
viii): “The patent laws aim, in effect, at bringing marginal private net product 
and marginal social net product more closely together.  By offering the prospect of reward for 
certain types of invention they do not, indeed, appreciably stimulate inventive 
activity, which is, for the most part, spontaneous, but they do direct it into 
channels of general usefulness.”  The only supporting evidence is a 
reference back to Professor Taussig.
The economists of the early nineteenth century who 
considered the question were as definite as Professor J. B. Clark that 
inventions would practically cease if the patent system were abandoned.  Jeremy Bentham was in no doubt 
at
39
all (Rationale of Reward): “With respect to a 
great number of inventions in the arts, an exclusive privilege is absolutely 
necessary in order that what is sown may be reaped… He who has no hope 
that he shall reap will not take the trouble to sow.”  John Stuart Mill’s argument was similar. 
(Principles of Political Economy, Book V., ch. x, s. 4.)  As Professor Taussig said, the 
utilitarians assumed that the patent system was responsible for the greater part 
of inventing activity.  The question 
which they one and all failed to ask themselves, however, is what these people 
would otherwise be doing if the patent system were not diverting their 
attention by the offer of monopolistic profits to the task of inventing.  By what system of economic calculus were 
they enabled to conclude so definitely that the gain of any inventions that they 
might make would not be offset by the loss of other output?  By no stretch of the imagination can the 
inventing class be assumed to be otherwise unemployable.  Other product which is foregone when 
scarce factors are diverted in this way completely escaped their 
attention.
In the view of Bentham, the patent system “produces an 
infinite effect, and it costs nothing.”  Jean Baptiste Say, although subsequently 
more critical, made a similar mistake in his Traite (Prinsep translation, 
Book I, ch. xvii): “Privileges of this kind no one can reasonably object to; for 
they neither interfere with, nor cramp any branch of industry, previously in 
operation.”  The withdrawal from 
them of scarce resources is ignored.  To John Stuart Mill, again, the only 
public loss was merely the postponing of a part of the increased cheapness which 
the public owe to the inventor.
Manufacturers, although some of them were inventors 
themselves, who gave evidence advocating the abolition of the patent system 
before a Select Committee of the House of Lords in 1851, were no doubt enabled 
by self-interest to perceive the loss more clearly.  I. K. Brunel, for instance, believed that 
because of the patent laws people spent their time trying to invent, who would 
do better for themselves at other things.  In particular, he maintained that workers 
wasted their time and ruined themselves, trying to think out patentable 
inventions, when development would be much quicker if they were not thus 
distracted from making improvements, and refinements of a non-patentable kind. 
 In the ‘sixties James Stirling, 
famous in another connection for his rebuke of John Stuart Mill at his 
capitulation to a sentimentally “soft school of
40
political economy,” emphasised the dangers of an over-stimulation of 
inventions by the patent system.  Yet at the beginning of this century Professor J. 
B. Clark was still writing: “If the patented article is something which society 
without a patent system would not have secured at all - the inventor’s monopoly 
hurts nobody… His gains consist in something which no one loses, even 
while he enjoys them.”  No inkling 
here that the patent inducement to invent diverts scarce human effort from other 
production, and that the subsequent exploitation of patents again interferes 
with the disposition of scarce factors which would obtain under competitive 
conditions.
If the views of Professors Taussig and Pigou, that the 
amount of inventive activity is in the main unaffected by the inducement 
offered by patent monopolies, come to be substantiated, the traditional case for 
the system will have been destroyed without further need for criticism; but it 
would surely be unreasonable to accept their view without strong supporting 
evidence.  It seems unquestionable 
not only that a very considerable volume of inventive activity must definitely 
be induced by price conditions, but also that that activity is diverted by price 
movements from other types of endeavour as well as from other fields of 
invention.  Entrepreneurs faced with 
new difficulties or with new opportunities will divert not only their own 
attention, but that of every technician who can be spared, from the business of 
routine production to that of urgent innovation.  They will not rely exclusively upon those 
types of professional inventors whose autonomous output pours out in a stream of unvarying size, and 
some of whom may be 
prepared, in return for the inducements which the entrepreneurs can offer, to 
transfer their spontaneous activity to their service.  It cannot be assumed that all who are 
capable of innovation spend their whole lives in inventing.  Many of them are also able administrators 
and production controllers; some in the past have been clergymen and barbers, 
and in our own time there is a steady flow of technicians from the research 
laboratories of pure science into those of industrial invention and out again. 
 Price changes, particularly if 
prices appear likely to take a new “set,” may therefore be expected to lead to 
an increase of invention and a decline in other activity.
The patent system makes possible this type of price 
movement.  It enables those who 
“have the monopoly of the right to use a patented invention to raise the price 
of using it for the whole term of the patent, within the limits fixed by the 
elas-
41
ticity of demand, and in -that way to derive a larger 
profit from the invention than they could otherwise obtain.  The effect must surely be to induce a 
considerable volume of activity to be diverted from other spheres to the attempt 
to make inventions of a patentable type.
It will be convenient at this stage to consider both 
kinds of diversion together, i.e. from other kinds of activity into invention, 
and from one kind of inventive activity to attempts to make such patentable 
inventions as will, in the expectation of the inventor or of those directing his 
efforts, produce the greatest possible remuneration under a régime of monopoly. 
 It will be recollected that 
Professors Taussig and Pigou declare the merit of the patent system to be the 
inducement it offers for the production of inventions of greater “general 
usefulness” than would 
otherwise be made.
It will be clear first of all that there is one class of 
inventions, on the making of which the patent system can exert no effect at all, 
namely those arising spontaneously, whether by accident or as manifestations of an “instinct of contrivance,” in persons whose inventing 
is uninfluenced by all economic stimulus.  It is hardly likely that this class is 
very important in volume or in kind.
The making of all other categories of patentable 
inventions may, however, be induced by the patent system.  It does not follow, of course, that they 
will necessarily all be made in response to this inducement, for in the absence 
of patents a sufficient price incentive might be present, in open market 
conditions, to direct inventive activity to the same field; but in so far as the 
inducement is furnished only by the expectation of a patent monopoly, a 
diversion of resources takes place and other production is foregone.  What grounds are there for concluding 
that the output induced by this type of monopoly has any greater claim to be 
regarded as “generally useful” than that which would have been induced in its 
absence by the price conditions of the open market?  I suggest that such a conclusion runs 
counter to all general presumptions concerning the disposition of scarce 
productive resources in a régime of monopolistic control as contrasted with 
open competition.  The nearer 
that market conditions approximate to pure competition, the less likely does it 
become that any entrepreneur or property owner will find it possible to 
influence prices by withholding supplies, and the more likely in consequence 
does it become that all resources, being put to the uses which 
maximise
42
the incomes of their owners, will yield their greatest 
aggregate product.  In perfect 
competition all production will take place at lowest cost per unit produced. 
 How can it be argued that any 
departure from such a condition, induced by the grant of monopoly power to raise prices 
and increase a sectional income by restricting output, will achieve 
greater “general usefulness?
The only conceivable line for such an argument to take 
would seem to be that ultimately the inventions of a patentable type 
which will be made in response to the grant of a temporary monopoly will possess 
a sufficiently greater general usefulness than would result from the other 
inventions or other output immediately foregone, to outweigh the immediate loss. 
 There surely exists no scientific 
reason for making any such claim for patentable inventions in general, as 
compared with alternative output.  It is conceivable that exceptional cases 
may arise, in which a new mechanism becomes socially desirable for a specific 
and very special purpose, and that prolonged research and experiment seem 
inevitable for its perfection, while no remuneration is likely to be forthcoming 
in the interim from models which are not wholly successful.  In such cases, special inducements might 
be necessary to secure the end in view.  Thus, for example, if a flying machine were needed 
capable of non-stop flights round the Equator, and machines with smaller ranges 
were of no utility, entrepreneurs might not be forthcoming and there might be a 
case for a special fund to finance the making of the invention.  A patent system applicable to inventions 
in general clearly cannot be justified, however, by exceptional circumstances of 
this kind.  Economics, in short, has 
not yet evolved any apparatus of analysis which would enable us to pronounce 
upon the relative productivity of this particular infant industry - the 
production of inventions; nor does it provide any criteria for the approval of 
this method of special encouragement.
The contention still remains for consideration that the 
patent system is necessary in order to secure the exploitation, if not the 
production of inventions.  The main 
argument is that entrepreneurs will be reluctant to invest in plant which others 
may also acquire for purposes of competition.  It need not detain us for long.  It cannot be assumed that patentable 
inventions in general necessitate new investment in such large units that fears 
of duplication will provide a frequent deterrent to entrepreneurs.  It is still exceptional for a single 
specialised productive unit to be sufficient to meet the bulk of the 
demand
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for a product.  Neither can it be assumed that inventors 
would cease to be employed if entrepreneurs lost the monopoly over the use of 
their inventions.  Businesses employ 
them to-day for the production of non-patentable inventions, and they do not do 
so merely for the profit which priority secures.  In active competition, the condition in 
which new devices are most promptly imitated, no business can afford to lag 
behind its competitors.  The 
reputation of a firm depends upon its ability to keep ahead, to be first in the 
market with new improvements in its products and new reductions in their 
prices.
A hundred years ago it was also argued as a merit of the 
patent system that it provided an inducement to inventors to make public the 
nature of their inventions so that they would eventually be generally available 
for wider exploitation.  When 
businesses were small, and processes might remain one-man or family affairs, 
secrecy and monopoly might indeed persist longer in open competition than under 
the patent system, just as it is reputed to do still within the Maskelyne family 
of conjurers.  But the conditions of 
industrial production have changed in this respect.  With large-scale manufacture, few 
valuable processes can now be conducted on so small a scale that prolonged 
secrecy is feasible.  Possibly - it 
is a question requiring intimate technical experience - there may exist chemical 
processes in which the nature of the product defies analysis and reconstruction 
of the method of manufacture, and in which the nature and proportions of the 
ingredients can effectively be maintained as the secret of a few people; but 
such cases, if they indeed exist outside the pages of detective fiction and 
sensational literature, must surely be exceptional, and unlikely to be 
eradicated by the inducements of temporary patent 
protection.
22. Uncertain 
Theoretical Basis
If the theoretical basis of the patent system is indeed 
as uncertain as this analysis suggests, the actual provisions of patent 
legislation cannot but be arbitrary.  It is impossible to share Jeremy 
Bentham’s enthusiasm.  To him “an 
exclusive privilege is of all rewards the best proportioned, the most natural, 
and the least burthensome.”… “[A patent] unites every property which can 
be wished for in a reward.  It is 
variable, equable, commensurable, characteristic, exemplary, frugal, promotive 
of perseverance, subservient to compensation, popular, and revocable.”  I propose to refer to a number of 
features of the patent system as it exists which are of particular relevance to 
the preceding discussion.
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There is first the question of the types of innovation 
which are covered by the patent law.  A very great deal of invention goes on 
outside its range, without any inducement beyond that provided by the operations 
of the open market.  One need only 
point to the so-called fashion trades, in which the rate of invention reaches 
probably its highest point, and to the non-patentable refinements and 
improvements every day being added to all kinds of industrial product.  In the last three hundred years there has 
been an enormous amount of litigation in this country concerning the nature of 
“a new manufacture.”  To the student of economics it makes 
instructive reading.  “Biological 
inventions” - innovations in plant-breeding for the production of special types, 
for instance, which are of undoubted economic significance -in the agricultural 
and pastoral industries - are excluded.  They may be freely adopted by 
competitors.  Yet they continue to 
be made.  Medical practitioners, 
partly no doubt on account of traditional altruism and partly as the result of 
the lead, if not the drive, of their professional associations, make very little 
use of the patent laws; and yet the work of medical invention goes on.  The whole field of scientific discovery 
lies outside the scope of the system, although inventors and manufacturers may 
owe the fortunes they have made from patented products in the main to the 
workers in pure science whose discoveries they have applied.  The task of distinguishing a scientific 
discovery from its practical application, which may be patentable - as for 
example in the field of wireless - is often baffling to the most subtle lawyer. 
 Associations of interested and 
discontented scientists do not fail to press their claims for inclusion.  There are the notorious Ruffini 
proposals, for instance, for the grant of monopolies to scientists covering 
their published discoveries.  Similarly, in the field of minor 
industrial inventions, there is strong pressure for an extension of the patent 
system, to supplement the registration of designs by a short-period patent 
protection of particular arrangements of mechanism, on the lines of the German 
Gebrauchsmuster.  How can it be 
shown that the “patentable” class of innovations possesses so much greater 
usefulness than all these others that it should be specially encouraged by 
monopoly?
Secondly, there is the system of reward itself.  It operates in favour of only one or one 
group of the many participants in the progress of an invention from the birth of 
the scientific discovery to the emergence of the patent monopoly.  The
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scientific discovery itself may be the culmination of 
the, research and of the tentative hypotheses of many scientific workers: the 
possibility of applying it in a particular device may occur almost 
simultaneously to large numbers of industrial technicians; priority in the 
formulation of the provisional patent application may be a matter of days or of 
minutes.  But one application alone 
can satisfy the requirement of this man-made law that the patent shall be 
granted to “the first inventor,” who receives a monopoly of the use of it for 
sixteen years, in this country, with the possibility of an extension for another 
ten.  The grant of a monopoly 
renders almost nugatory the labours of all the rest, for any refinements they 
may subsequently invent in this type of device will, if patented, be much 
reduced in value by the requirement that acknowledgment shall be made, in the 
patent specification, of the prior “invention.”  Lotteries in open competition there may 
well be; but the lottery of the patent system awards but one prize, and that a 
monopoly, while those who subscribe most of its value may be precluded from 
qualifying for the prize.
The existence of a monopoly in fact operates to divert 
the attention of inventors from what may well be the most fruitful field for 
further innovation.  In the case of 
inventions which cannot be patented, a particularly useful device at once 
attracts the attention of other specialists who seek, maybe competitively, to 
refine and improve it and to adapt it to the widest possible use.  The blocking effects of patent monopolies 
check these surely beneficial tendencies; competitors, instead of helping to 
improve the best, are compelled in self-preservation to apply themselves to the 
devising of alternatives which, though possibly inferior, will circumvent the 
patent.  It is a particular case, 
but one which is very widespread, of the maldistribution of resources which is 
consequent upon the existence of monopoly.
The term of the patent grant must inevitably be 
arbitrarily determined, even if each invention were separately considered.  A fixed period of years for all and 
sundry expediently avoids countless difficulties, the range of which may be 
gauged from the efforts of the courts to determine, in the case of applications 
for extensions, the “nature and merits” of an invention; in order to decide 
whether the patentee has been “inadequately remunerated” and the period, if any, 
for which an extension shall be granted.  Economists will well appreciate why the 
Royal Commission of 1862, which included Lord Overstone,
46
was strongly opposed to any extensions whatever.  Yet if there were a parallel provision, 
that any person interested might apply at any time during the life of a patent 
for its revocation on the grounds that the patentee was already more than 
adequately remunerated, some interesting legislation would certainly ensue, and 
the decisions of the Courts, however lacking in principle, might well be 
preferable to the existing fixed minimum term.
Special interest attaches to the provisions which have 
been gradually inserted in the patent laws during the past hundred years with 
the object of mitigating “abuses” of the system, meaning thereby such use of the 
monopoly power as appeared obviously in conflict with the general interest. 
 From the 1840’s, side by side with 
the movement for the simplification of the patent law, there continued for a 
generation a strong agitation for the abolition of the whole system.  It had the support of The Times 
and of The Economist.  The strong Royal Commission of 
1862-4, though precluded by its terms of reference from doing more than 
recommend amendments, was clearly opposed to the whole system.  Professor Thorold Rogers read two papers 
against both patents and copyrights before the British Association in 1864 and 
1865; while Members of Parliament and manufacturers carried on a continuous 
propaganda.  The movement was not 
-confined to England; in the late ‘sixties a number of economists in France, 
including M. T. N. Benard and Michel Chevalier, wrote against patents; in 
Germany, Bismarck attacked the system in 1868 in the North German Federal 
Parliament; in Holland, the patent law was repealed in 1869.  In 
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outside the jurisdiction of the laws of this country. 
 I propose in the remainder of this 
paper to confine myself to two only of the modifications which have been 
introduced into the patent legislation of this country, viz, the sections 
governing the grant of “compulsory licences” and the more recently 
introduced “licences of right.”
Provision has been made for fifty years now for the 
grant of compulsory licences in the event of certain allegations, which could be 
made by any person interested, being found by the competent tribunal to be true. 
 From the first, one of the grounds 
has been that the patent is not being worked in the 
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guiding considerations.  The first two are worthy of notice 
here:
[Patents and Designs Act, 1907 (as amended) Section 
24—(I) (6)]
“(i) he shall, on the one hand, endeavour to secure, the 
widest possible user of the invention in the 
“(ii) he shall, on the other hand, endeavour to secure 
to the patentee the maximum advantage consistent with the invention being worked 
by the licensee at a reasonable profit in the 
Possibly those responsible for this formula might be 
satisfied if the assessor contrived to induce both the full competitive output 
and the maximum monopoly profit at the same time.
It is enlightening to examine the extent to which since 
1919 the Comptroller has 
attempted to interpret these instructions.  By the end of 1931, out of less than 
fifty applications, many of which were subsequently withdrawn, nine grants were 
actually made.  Three were however 
discharged on appeal, and in the case of the remaining six it appears that it 
was not necessary for the Comptroller to fix terms.
The same duty of fixing terms, failing agreement between 
the parties, falls upon the Comptroller in the case of Licences of Right.  In the same period, 7,533 patents were 
endorsed, but in only seventeen cases was an application made for the settlement 
of terms.  At the end of 1931, three 
of these applications had been withdrawn, one was suspended -by request of the 
parties, and thirteen were still pending.  In no case, therefore, had the 
Comptroller been persuaded to attempt the feat of following the instructions of 
the Act.
Licences of Right furnish us with an economic curiosity. 
 The 1919 Act, presumably with the 
object of inducing monopolist patentees not to restrict so narrowly the supply 
of the invention during the life of the patent, offers the remission of half the 
fees subsequently payable to all patentees who request that their patent be 
endorsed “Licences of Right,” the effect being that any person may thereafter be 
entitled as of right to a licence to use the invention upon terms to be agreed 
or settled by the Comptroller.  The 
large number of endorsements - 7,533 to the end of 1931 - is striking, although 
of course a small percentage of the total number of patents in force 
during
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the period (about 20,000 new complete specifications 
being added each year).  The fact 
that in all cases the licence fee has been fixed by agreement without recourse 
to arbitration by the Comptroller would suggest that the patentee secures a 
royalty not far different from that which he believes will adjust the total 
output to the amount which maximises his monopoly profit.
If we were to make the assumption that the adjustment of 
volume of output to given price conditions takes place promptly, and that 
different firms have broadly the same production costs, the position would then 
be that the volume of output would remain more or less the same as that which 
would emerge under the ordinary patent system, while the patent office would 
have forfeited half its revenue to little good purpose, so far as the general 
public is concerned.  We cannot, 
however, assume either that production costs of different firms are identical, 
or that a sole licensee will rapidly expand his output and sales to the point of 
maximum net revenue.  It therefore 
appears very probable that the Licence of Right system, by enabling any producer 
to try his hand at producing the patented article, facilitates the operation of 
competitive forces in concentrating output in the firms which have lowest costs, 
and encourages the rapid spreading of production over a number of producers, so 
that the aggregate output is in fact increased more rapidly to the point of 
maximum monopoly profit (if the patentee fixes his terms to his best advantage) 
than would otherwise be likely (if it does not in fact, exceed that amount for a 
time, to the loss of certain licensees).  This device almost certainly serves to 
increase output, for without it the monopolist would probably not as rapidly 
decide to grant as many licences to the producers whose costs are 
lowest.
Without, therefore, injuring the monopolist’s interest, 
so long as licence terms continue to remain at the point he himself selects, the 
licence of right system tends to correct one of the practical objections 
to the patent system, i.e. the slowness of the expansion of the output of 
patented articles.  If, therefore, 
it could be reasonably assumed that the Comptroller would continue successfully 
to evade the alarming task of fixing terms, there would be much to be said in 
favour of modifying the patent system so that licences of right became the 
normal practice.  In the case of 
copyright, in which the device was first applied, the problem of terms could be 
settled - if crudely - by fixing a royalty of so much per cent of the price of 
the book
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or gramophone record or piano-roll as the case might be. 
 So simple a solution is hardly 
applicable to inventions, and if disputes between patentees and licensees became 
frequent some other rough-and-ready rule would need to be 
devised.
Expedients such as licences of right, nevertheless, 
cannot repair the lack of theoretical principle behind the whole patent system. 
 They can only serve to confine the 
evils of monopoly within the limits contemplated by the legislators; and, as I 
have endeavoured to show, the science of economics as it stands to-day furnishes 
no basis of justification for this enormous experiment in the encouragement of a 
particular activity by enabling monopolistic price 
control.
There is to-day widespread alarm at that increasingly 
rapid rate of obsolescence of industrial equipments which is the reverse aspect 
of the quickening of technical progress.  Everywhere we encounter the protests of 
owners of specialised plant and of specialised workers at -the changes which 
convert property and specialised skill into “surplus capacity.”  In so far as the new enterprises compete. 
for their resources, capital and labour, in open competition with existing 
businesses, economists have strong grounds for the presumption that the gains 
from their success will outweigh the losses.  If, however, innovation is especially 
encouraged, to the loss of other production, by monopoly price conditions, is it 
not conceivable that there may be relatively “too much invention of the wrong 
kind,” and, in consequence, “too much” obsolescence and displacement of 
specialised ability?  Can it be that 
the patent system is in part responsible for our present economic 
troubles?
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