#1678 1930 · US Congress / nursery industry (Rep. Fred Purnell) · Horticulture / intellectual property
Breeders could not patent a rose, so they had Congress invent a separate kind of patent
the problem
A new variety took years to breed, anyone buying one plant could propagate it, and patent law covered only manufactures
background
A plant breeder could spend a decade crossing and selecting to arrive at a new rose, apple or peach, and then had nothing to sell but the plants themselves. Anyone who bought a single specimen could graft it indefinitely and sell the offspring in competition with the breeder, at a price that never had to carry the cost of the breeding. Growers, as the House archive records, 'had long complained that without legal safeguards their products, which often took years to perfect, were replicated and sold by others.'
The patent system was no help, because it was built around a manufacture — something a person made — and a plant was treated as a product of nature that a breeder had merely found or coaxed. The gap was stated most memorably by Representative Fred Purnell of Indiana, an eight-term member of the Agriculture Committee: 'Why should a man who invents a mouse trap or a jazz song have protection and enjoy the privileges that the patent system gives him, and a man like Luther Burbank, who spent his life developing new plants, get nothing?'
what everyone would do
Litigate. Argue that a deliberately bred variety is the breeder's own creation and therefore a patentable invention under the law as it stands, and try to win a definition of 'manufacture' broad enough to admit a plant — a fight against the product-of-nature doctrine that would have taken years and could be lost or narrowed on appeal.
what they saw
Rather than argue a rose was a manufacture, the nursery trade had Congress cut a new right — drawn narrowly enough, grafted plants only and never seeds or grain, that the interests it would alarm had nothing to fight.
the move
Rather than litigate to force plants into the existing definition of a patentable invention, the nursery trade and its allies had Congress legislate a parallel right with its own boundaries. The Plant Patent Act, passed by the House on 13 May 1930, granted the developer of a distinct new variety an exclusive right for seventeen years — but only to propagate it asexually, by 'grafting, budding, cutting, layering, division, and the like'. The decisive feature was what the Act deliberately left out: it did not cover seeds, potatoes, corn, or other cereals and grains. That exclusion is why it passed. Protection over staple food crops would have provoked the farm interests and their representatives; a right confined to hand-propagated ornamentals and fruit trees threatened almost nobody, and the stated purpose could be framed simply as giving agriculture 'the same opportunity to participate in the benefits of the patent system as have been given industry'. The bill drew support from agricultural organisations, the Commissioner of Patents and Thomas Edison — who was himself working on a rubber-rich goldenrod at the time — and only one member, Fiorello La Guardia, questioned whether it was needed at all. The Patent Office granted the first plant patent on 31 August 1931 to Henry F. Bosenberg of New Jersey for New Dawn, a hardy repeat-blooming climbing rose. Roses turned out to dominate the new right: of the roughly 3,010 plant patents granted between 1931 and 1970, nearly half were roses.
why it works
A parallel right avoids the two things that make definitional litigation expensive: you are not asking anyone to abandon an existing doctrine, and you are not bound by boundaries someone else drew for a different purpose. Writing the rule yourself lets its scope match the actual asset — here, asexual propagation, which is precisely how a nursery reproduces a named variety and precisely what a copier must do to compete. And the narrowness does political work as well as legal work: by leaving seeds and staple crops alone, the drafters removed the only constituency large enough to defeat the bill, so the principle could be established cheaply and its boundary argued about later, from the inside.
the payoff
The House passed the Plant Patent Act on 13 May 1930; the first plant patent went to a climbing rose the next year.
where it breaks
Legislating a new right needs a sponsor, a coalition and a legislature with room on its calendar — the nursery trade had an Agriculture Committee veteran, national grower organisations and Edison's endorsement, which is not available to most claimants. Narrow drafting also has a cost that arrives later: a right written tightly enough to pass leaves the valuable territory outside it, and here the excluded ground — seed crops and staples — became the contested field for the next forty years. And a right is only as good as the infringement you can detect; a grafted copy in a distant nursery is hard to find, which is why enforcement, not the statute, is where plant patents are usually won or lost.
what came after
The Act established the principle that living plant varieties could be private property, and the boundary it drew was widened by later law rather than overturned: the Plant Variety Protection Act of 1970 reached seed-propagated crops, and plant breeders' rights on the same model spread internationally through the UPOV convention. The staple-crop exclusion the 1930 Act needed to survive is exactly the territory the fight later moved to.
references
- [1]Plant Patent Act of 1930 — Historical HighlightsUS House of Representatives: History, Art & Archives, 2020history.house.gov
- [2]Garden of Plant Patent FactsUniversity of Maine Libraries, 2024libguides.library.umaine.edu