Wednesday, April 17, 2019 T 0725/14 - Valid transfer of rights results in invalid priority claim

If during the priority year a European patent application - filed by applicant A - is transferred to a party B, is then the priority claim from a subsequent application (from which the patent in suit matured) by applicant A to the earlier application valid? Which acts and statements, including their timing, constitute the transfer of a priority right between parties? And what role do the parties' intentions - as far as they can be derived from the documents on file - play in this?

Wednesday, January 24, 2018 T 282/12 - Partial priority and "the first application": partial first application

May a priority application and an even earlier application filed by the same applicant partially relate to the same invention, just as the priority application and a patent claiming priority therefrom may partially relate to the same invention (whereby the latter may benefit from partial priority under G 1/15)? If so, the priority application would be the first application in respect of only that part of the invention which is not the same as in the earlier application and priority would only be valid for that part, but not over the full scope of the claim. This was the key point in this decision.

Friday, September 01, 2017 T 1519/15 - Not so poisonous parent

A 'family' of Amanita muscaria, which is best not eaten

This Examination Appeal shows the Board applying G 1/15 to what would otherwise have been a 'poisonous parent' situation. The outcome is as expected - the decision under appeal is set aside.

The Examination Division considered , pre-G 1/15, the situation as follows: claim 1 of the divisional application represents a generalization with respect to a species described in an earliest US priority document P1, and thus is, in accordance with the pre-G/15 legal situation, in its entirety entitled only to a later priority date from a US priority document P2. The EP parent application, which is cited as D3, also describes P1's species and is thus, at least in as far as pertaining to this species, entitled to the earliest priority date P1. D3 thus belongs, at least in as far as the described species, to the Art. 54(3) State of the Art of the divisional application and thus takes away the novelty of claim 1.

Tuesday, May 30, 2017 T 260/14 - Partial priority for a working example of a generic claim feature

The opposition division did not allow the main request as it considered  the priority application to be prior art pursuant Art. 54(3) EPC and the generically worded claim 1 of the main request to be anticipated by an examplary dental impression material disclosed in the priority application ('poisonous priority'). The proprietor appealed and argued that partial priority should have been recognized, following the principles of G 1/15. In the opponent's view, the claim was not entitled to partial priority and the working example of the priority document (also present in the granted patent) destroyed the novelty of the claim. In the decision , the Board carefully explains how G 1/15 is to be applied, and confirmed partial priority for the part of claim 1 concerning the working example. Consequently, the claim was novel.

Tuesday, June 07, 2016 T 239/13 - Wait to be poisoned, or not

Today and tomorrow, oral proceedings for the referral G 1/15 "poisonous priorities/ poisonous divisionals / poisonous parents" (by T 557/13, pdf; amicus curiae briefs) are held. This opposition case is stayed in view of the relevance of the referral for the validity of priority for its independent claim.

Sunday, August 23, 2015 T 557/13 - Referral: Mother poisonous for child?

This case refers five questions to the Enlarged Board of Appeal with respect to what is often referred to as partial priority, poisonous divisionals and poisonous priorities. This case has been discussed earlier in this blog, see our post "T 557/13 - Poisonous or nothing wrong?". 
The opposition decision under appeal relates to a patent that is a divisional from  D1 (which is an EP patent enjoying priority from D16). The divisional also claims priority from D16. The Opposition Division decided that claim 1 of the patent of this appeal case does not enjoy the priority from D16 and, thus, the filing date of D1 is the effective date of claim 1. It may be that the opinion of the Opposition Division is now summarized too much, but, according to the Opposition Division is D1 is an Art. 54(3) EPC document because the effective date of D1 is the priority date of D16, and D1 is published after the effective date of claim 1. 
An additional complication in this case is that claim 1 of the divisional application is a so-termed "generic 'OR'-claim" (see point 8.2.2 of this decision for a definition). Subsequently one could argue that a first portion of claim 1 enjoys priority from D16 and D1 is not an Art. 54(3) EPC document for this first portion, while another second portion of claim 1 does not enjoy priority from D1 and, consequently, the novelty of this second portion must be examined over D1 as an Art. 54(3) EPC document. 
Furthermore, the parties to the appeal proceedings had a diverging opinion about "Can a parent application of a divisional application be a novelty destroying Art. 54(3) EPC document?".
The Board of Appeal could not decide on these subjects because, as extensively discussed in the decision, the case law diverges in different directions. Therefore the Board formulated five questions for the Enlarged Board of Appeal. 

Tuesday, May 26, 2015 T 557/13 - Poisonous or nothing wrong?

At the closure of the debate in oral proceedings in T 557/13, the Chairman announced that the Board will refer one or more questions to the Enlarged Board of Appeal in relation to what is often referred to as partial priority, poisonous divisionals and poisonous priorities. The questions are not yet formulated - the decision will be given in writing.  The topic is however of such an interest that we want to post it already now on our blog -- we will come back to the topics once the referral is done. 

Background / Summary of Facts and Submissions