
Government and the economy 233
them by the Statute of Monopolies, that is, only to new manufacture.
They found it more and more difficult to determine whether a petition
submitted to them was indeed for a novel method or machine. By asking
for specification, they did not intend to put the petitions under their own
careful professional scrutiny. They continued to register them as before.
The idea was to transfer the burden from themselves to other interested
parties (MacLeod 1988). In some circumstances, this also meant that the
state was no longer a party to the ensuing litigation. An important im-
plication of this shift was that the definition of the property rights of
inventors was done ex-post and not ex-ante. Neither the crown officers
nor the courts provided inventors with detailed rules regarding the sub-
mission of specifications. Inventors could go to the trouble of investing
in experiments, specification, patenting, production and marketing, only
later to face a court suit that would void their patent.
This indeed happened to some of the most notable inventors. Ark-
wright lost his 1775 carding machine patent in 1785 mainly on the
grounds of unsatisfactory specification. In the process, he was involved in
three trials over four years, losing not only the patent but also a great deal
of time and money. Boulton and Watt were occupied for more than two
decades with the validity of their 1769 fire engine patent. They realised
at some point that it was not well specified, and their concern grew after
Mansfield’s 1778 decision in Liardet v. Johnson. They became involved in
the litigation of other inventors, including Arkwright, in an attempt to
achieve advantageous court decisions. They considered petitioning for a
new patent. They lobbied parliament for an act that would prolong their
patent, hoping that this would also protect it from invalidation. Finally,
they reached a conscious decision to put up with a bearable level of in-
fringements rather than risk losing a claim in court which would mean
invalidation of the patent altogether. Only in 1794 did they dare to go to
court, employing the leading lawyer of the time.
The problem of patent law was wider and graver than the question of
specification. It resulted from the fact that the statutory basis of intellec-
tual property rights in inventions throughout the industrial revolution
was one old clause, Clause 6 of the 1624 Statute of Monopolies. The rest
had to be created by judges who could not do much to expound the law
when hearing only one case in the period 1750–69 and twenty-one cases
between 1770 and 1799 (Dutton 1984: 69–85).
Since judges, unlike legislators, cannot set their own agenda, they de-
pend on the flow of cases into their courtroom. In this case, the flow
was less than one case per year, and many of these cases were decided
on evidence or on minor points of law. To this, one should add the fact
that creating detailed rules in this field of law was exceptionally com-
plicated, because judges could not apply legal doctrines borrowed from
other fields of law since they had to deal with technical issues unfamiliar
to lawyers, and because the nature of innovations was changing rapidly. A
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