T 2049/23 - Watermelons and discoveries

Key points

• The opponents include "Keine Patente auf Saatgut! e.V.". The patent concerns a conventionally-bred watermelon.
• The opponent argued that "the transitional period created by opinion G 3/19 should not be taken into account and that it did not matter whether the patent applications were filed before or after July 2017."
• The present Board: "in order to ensure legal certainty and to protect the legitimate interests of patent proprietors and applicants, the Enlarged Board of Appeal [in G 3/19] further decided that "the new interpretation of Article 53(b) EPC given in this opinion has no retroactive effect on European patents containing such claims which were granted before 1 July 2017, when Rule 28(2) EPC entered into force"
• It seems that the opponent did not invoke Article of the AC decision that inserted Rule 28(2): "This decision shall enter into force on 1 July 2017. Rules 27 and 28 EPC as amended by Articles 1 and 2 of this decision shall apply to European patent applications filed on or after this date, as well as to European patent applications and European patents pending at that time" (OJ EPO 2017, A56). This is a pity, because the EBA did not expressly set aside that part of the AC's decision.
• On inventive step:  the appellants  [opponents] submit that the claimed watermelon plants having a bush growth habit constitute a discovery rather than an invention. The board understands this as an objection under Article 100(a) and Article 52(2)(a) EPC to the effect that the claimed subject-matter is not a patentable invention but a discovery.'" 
•  "According to the case law of the Boards, a substance which occurs in nature can be considered an invention when it is shown to give rise to a technical effect. This principle is reflected in Rule 27(a) EPC, according to which biotechnological inventions are patentable if they concern biological material which is isolated from its natural environment or produced by means of a technical process, even if it previously occurred in nature. 
• For example, if a microorganism is found in nature and shown to produce an antibiotic, the microorganism itself may also be patentable as one aspect of the invention. 
• Similarly, a gene which is discovered to exist in nature may be patentable if a technical effect is revealed, e.g. its use in making a certain polypeptide or in gene therapy
•  "The board considers that the plants (and plant tissues) of claims 1 to 16 do not constitute a discovery." 
• "While the "home-garden diploid watermelon [with] an interesting growth type" mentioned in paragraph [0119] of the patent [] could be argued to be a discovery, it is not part of the claimed subject-matter. Instead, the mutated allele present in said plant has been transferred to other plants (i.e. those producing seedless fruit) and these have been shown to produce a technical effect: as set out in paragraph [0001] of the patent "this plant can be grown at a higher density in the field compared to traditional non-bush triploid watermelon hybrids, leading to a higher fruit yield per hectare compared to triploid hybrids with normal growth habit (having an average longest vine length of above 200 or above 300 cm)"."
• The appeal is dismissed. 

EPO 

The link to the decision can be found after the jump.

https://www.epo.org/en/boards-of-appeal/decisions/t232049eu1