T 0729/24 - A case with a letter rogatory

Key points

• A rare case with a letter(s) rogatory.
• The opponent had filed emails, as alleged prior art, that the original applicant sent to third parties. The original applicant was summoned as a witness by the OD. The witness, an Italian national, requested to be heard by the competent national court
• The EPO sent a letter to the Italian authorities requesting that the competent Italian court hear the witness (the document refers to an attached letter rogatory, but I've not found that in the public file wrapper. The EPO's letter uses 'letter rogatory', though customarily it is always plural (I understand).
• The transcript of the hearing by (and before) the Italian court (attended by the chair and the legal member of the OD), and the English translation of the transcript, can be found here.
• The OD concluded that the emails and documents at issue were not public, except for one email (D18) with attachments (see the OD's decision). D18 was sent to a prospective customer a couple of days before the filing date of the patent (and the priority is only partially valid). 
• The Board's preliminary opinion was that the claims as granted lacked basis in the application as filed, and that D18 was prejudicial to inventive step of most of the auxiliary requests.
• The proprietor then withdraws all auxiliary requests on file. The Board finds, as the OD, that the claims as granted lack basis in the application as filed.
• See T 2893/18 for an earlier appeal in this opposition case.

EPO 

The link to the decision is provided after the jump.

T 1789/22 (II) Amended description can be filed later

Key points

• The Board, in headnote 2: 'A proprietor cannot be expected to file an amended description in appeal proceedings until an allowable set of claims is found. The lack of an adapted description constitutes no obstacle to the admittance of an amended set of claims into the appeal proceedings (see Reasons points 6.3 and 6.4)."
• "There is also a whole body of decisions of the boards of appeal in which the cases where remitted to the opposition division for adaptation of the description to the claims found allowable. This practice is common where the patent proprietor attends the oral proceedings. The board sees no reason to deviate from it where the patent proprietor does not attend the oral proceedings. Decisions addressing requests to not admit a set of claims due to lack of an adapted description, where the board acknowledged the practice of allowing an adapted description to be filed once there is an allowable set of claims, possibly before the opposition division, include T 0807/16 (see Reasons 1.4), T 146/17 (see Reasons 1.2 and 1.3), and T 155/20 (see Reasons point 1.4). 
• 6.4 In view of this long-standing practice, the proprietor cannot be expected to file an amended description until an allowable set of claims is found. Taking into account that the board had not indicated prior to the oral proceedings that it intended to deviate from this established practice, applying the principle of legitimate expectations, the board decided that the lack of an adapted description constituted no obstacle to the admittance of the request into the appeal proceedings."
• Of course, this could be different if the Board expressly indicates that a revised description must be filed.

EPO 

The link to the decision is provided after the jump.

T 0824/23 - An intermediate generalisation is allowable ...

Key points

• The Board: "An intermediate generalisation is allowable ..." (this should pique your interest).
• That's not something I've seen very often in the recent case law, so let's pay attention.
• "An intermediate generalisation is allowable if it is directly and unambiguously, explicitly or implicitly, derivable for a skilled person from the application as filed that the feature can be isolated from the other features, such that the omission of the other features does not add new technical information (i.e. the "gold standard", G 2/10, Reasons 4.5.1). In accordance with the established case law of the Boards, the omission is justified only if the isolated feature is not inextricably linked with the other features, or, as sometimes expressed, "in the absence of any clearly recognisable functional or structural relationship" among those features or if it is clearly recognisable that the extracted characteristics are "not closely related" to the omitted characteristics (see Case Law of the Boards of Appeal of the EPO, 11th edn., 2025 (Case Law), II.E.1.9.1)."
• "These criteria do not refer to the mere "context" in which the isolated feature was presented. The decisive factor is whether the isolated features taken up in the claim are understood, by the skilled person in the art, to be inextricably linked to the omitted features to which the features taken up were linked but which were left out of the claim. This is the case if the person skilled in the art would have regarded the omitted features to be necessary for achieving the effect associated with the added features (see T 1762/21, Catchword)."
  
  
• After a detailed technical analysis: "Accordingly, the specification  [by the amendment of the claim ]of a direct connection in the vertical direction between the straight vertical inner side surface 52b and the waste receiving surface 44 top end 44a (Feature g') is not inextricably linked with the configuration of the flush water spouting system(s), the structure and geometry of further surfaces involved in the flush water distribution, and the problem of avoiding splashing of flush water out of the bowl."
• The amendment is deemed allowable. 

EPO 

The link to the decision is provided after the jump.

T 2342/22 - Partial priority and generic intermediate art

Key points

• Claim 1 is a second medical use claim for a combination therapy. Claim 1 has partial priority for only one embodiment. In particular, the priority document discloses only an embodiment with a specific order for administering the medicines. 
• D9 is a conference paper published in the priority year. It teaches the medical use (the method of therapy), but not the order of the administration. D9 does not specify the order in which the components of the combination therapy were administered to patients. 
• Is claim 1 novel over D9?
• According to the Board, yes, because "Since document D9 fails to disclose an order of administration not covered by the partial priority right conferred by the disclosure in [the priority document], the board considers that the disclosure of document D9 cannot anticipate the subject-matter of claim 1 within the meaning of Article 54 EPC."
• Hence, to anticipate the claim, D9 should have taught an embodiment that is unambiguously outside the part of the claim for which the priority is valid (and that is, also, in accordance with the claim).
• However, the claim is not inventive over D9 as the CPA. 
• "Starting from document D9 as the closest prior art, which discloses the use of a FITC-tagged adapter molecule in combination with AT-CAR T cells but does not specify an administration regimen, the skilled person would recognise that document D9 leaves open three alternative possibilities: administering the tagged adapter molecule prior to, simultaneously with or after the AT-CAR T cells. ... The arbitrary selection of one of them does not involve an inventive step."

EPO 

The link to the decision is provided after the jump.

T 0083/23 - Debit order on paper

Key points

• " In the present case, the opponent filed a notice of appeal within two months of notification of the opposition division's decision. As to the appeal fee, an order to debit the opponent's deposit account was given in the notice of appeal, thus on paper rather than in an electronically processable format."
• Also in January 2023, the ADA specified that debit orders must be "filed in an electronically processable format (xml) via one of the following: - EPO Online Filing using EPO Forms 1001E, 1200E, 2300E or 1038E, or Online Filing 2.0 using EPO Forms 1001E, 1200E or 1038E ... "
• "In the board's view, the debit order filed by the opponent on paper with the notice of appeal on 16 January 2023 was not validly filed. The filing of the debit order in an electronically processable format after expiry of the time limit of two months as set by Article 108 EPC, i.e. on 3 February 2023, was late, with the consequence that the opponent's appeal is deemed not to have been filed."
• " Where an opponent decides to avail itself of the use of a deposit account as a method for paying the relevant fees with the EPO (Article 5(2) Rules relating to fees), it is also its duty to know the relevant requirements for debiting a deposit account, including the types of debit orders and the accepted ways of filing them. The opponent's reference to its clear intention to give the order to deduct the appeal fee is not relevant under the present circumstances either."
• No request for correction under Rule 139 was filed.
• Three comments. First, the Notice of appeal was filed electronically, via Online Filing 2.0 (see the receipt), and Form 1038E was used (link), but that form did not include the debit order. The purported debit order was in the 'PDF' Notice (which does not bear a signature, so could not have been a valid paper Notice of appeal at any rate. The electronic signature is, however, in Form 1038E). Was the debit order really filed on paper?
• Second, the Board obiter holds that a request for correction is ruled out.  "A correction of the debit order in application of Rule 139 EPC presupposes that a valid debit order exists, i.e. filed in an electronically processable format. In the jurisprudence of the Boards of Appeal, correction of a debit order has only been allowed in case of errors concerning the amount of the appeal fee (see e.g.J 8/19 Reasons 2.4, T 317/19 Reasons 2.4.2, T 444/20 Reasons 2.4.3, T 2620/18 Reasons 5)."
• However, see T1146/20.
• Third. The opponent's appeal is deemed not to have been filed. The appeal fee is reimbursed. However, it may be a case of winning by losing. The OD maintained the patent in amended form; the proprietor also appealed, and the Board found the claims as granted allowable. Had the opponent validly paid the appeal fee, the decision in the patent would have been the same, and the appeal fee would not have been reimbursed.

EPO 

The link to the decision is provided after the jump.

T1620/23 - Inventive step as new ground (?)

Key points

• The Board, in translation: "The ground for opposition of lack of inventive step pursuant to Article 100(a) in conjunction with Article 56 EPC was mentioned in the notice of opposition dated 30 August 2021, but not substantiated in accordance with Rule 76(2)(c) EPC. Rather, the opponent reserved the objection of lack of inventive step for a later stage of the proceedings, should this objection become relevant due to new requests (notice of opposition, page 11). Accordingly, no statement was made regarding the question of the lack of inventive step in claim 1 as granted."
• The claim was attacked as not novel, I understand.
• The OD found the claims to be not novel. "the opponent did not make any statements regarding the lack of inventive step of the granted patent in the further course of the opposition proceedings."
• The Board finds the claim to be novel (contrary to the OD). The opponent would like to attack the claim for lack of inventive step.
• "The opposition ground of lack of inventive step under Article 100(a) in conjunction with Article 56 EPC – which, according to the decision of the Enlarged Board of Appeal G 7/95, is to be distinguished from the opposition ground of lack of novelty – was therefore not effectively raised by the opponent. The Opposition Division also did not introduce this opposition ground into the proceedings pursuant to Article 114(1) EPC. In particular, the Opposition Division's decision on claim 1 of the granted version of the patent was limited to the lack of novelty of the subject-matter. If the opposition ground is neither asserted and substantiated in the notice of opposition nor introduced into the proceedings by the Opposition Division, a "new opposition ground" exists according to G 1/95 and G 7/95, in each case reason 5.3. In appeal proceedings, such a new opposition ground may, according to decision G 10/91, only be examined with the consent of the patent proprietor."
• "The patent proprietor refused to consent to the examination of this ground for opposition. The ground for opposition of lack of inventive step may therefore not be examined in the appeal proceedings (G 10/91, principle 3). 
• Cf. T 131/01, published in the OJ: "In a case where a patent has been opposed under Article 100(a) EPC on the grounds of lack of novelty and inventive step having regard to a prior art document, and the ground of lack of novelty has been substantiated pursuant to Rule 55(c), a specific substantiation of the ground of lack of inventive step is neither necessary - given that novelty is a prerequisite for determining whether an invention involves an inventive step and such prerequisite is allegedly not satisfied - nor generally possible without contradicting the reasoning presented in support of lack of novelty. In such a case, the objection of lack of inventive step is not a fresh ground for opposition and can consequently be examined in the appeal proceedings without the agreement of the patentee"
• As discussed in  Visser's Annotated EPC, Rule 76(2):4.3.3, incidentally. 

EPO 

The link to the decision is provided after the jump.

T 1789/22 - Two opponents, one appeals, attacks submitted by the other

Key points

• Decision of 12.12.2024, written decision issued on 19.12.2025 (Board 3.3.04, no communication under Art. 15(9) RPBA visible in the online file).
• There were two opponents. Opponent 1 appeals. Opponent 2 and the proprietor do not appeal. Opponent 1 maintains only some of the attacks in their Statement of grounds. Opponent 2 is a party as of right and uses its 'reply' to the appeal to submit additional attacks.
• "The submissions of the party as of right-opponent 2 included objections under lack of novelty in view of document D27 and lack of inventive step where documents D6 and D31 were taken to represent the closest prior art. Since the opposition division took a decision on these lines of attack in favour of the respondent, an appeal should have been filed to have these findings reviewed [*], rather than merely contesting them in the reply to the statement of grounds of appeal. However, as indicated above, the appeal of the appellant did not contest the decision in these respects, therefore these objections are outside the legal and factual framework for review by the board. Their consideration is in principle not excluded but is subject to the discretion accorded to the board under Article 114(2) EPC and Articles 12 and 13 RPBA."
• The Board's exercise of its discretion is intertwined with its decision on the subsequent letter of the appellant (opponent 1) that it agreed with the attacks (objections) of opponent 2.
• " The board notes that the appellant provided no justification for not having raised these objections with the statement of grounds of appeal, and the board cannot see any either. Moreover admitting these several additional attacks would be detrimental to procedural economy and unfair for the respondent, who relied on these parts of the appealed decision not having being contested. Accordingly, the objections filed by the appellant with this letter were not admitted into the appeal proceedings. The same applies to the corresponding objections filed by the part as of right."
• * - Note that this point is a bit tricky. Had the OD revoked the patent as novel over D1 but not inventive over D2, the opponent could not have appealed on the ground of the unfavorable reasoning on novelty (the requirement of being adversely affected of Art. 107 is determined by reference to the order of the decision, not the reasons). 
• By the same token, had the proprietor appealed as well, opponent 2 as a respondent could have submitted the attacks validly in their reply to the appeal.
• 
  
• Furthermore, opponent 1 had attacked only some of the independent claims of the set of claims held allowable by the OD in its statement of grounds, but did not attack independent claim 5 in its statement of grounds.  
• The Board holds a later-filed attack against claim 5 to be inadmissible: " As set out above, the statement of grounds of appeal defines the framework of the appeal and in the present case it did not include novelty of claim 5 of the request held allowable by the opposition division (see points 2., 5. and 5.1). Accordingly, novelty of claim 1 of the main request is not open for review by the board in this appeal proceedings."
• The Board first recalled the principle of the 'extent of the opposition'. The Board then reasoned that: "2. With regard to opposition appeal proceedings, in addition the statement of grounds of appeal determines the object of the appeal proceedings and the legal and factual framework for the review of the appealed decision by the board. In other words, the statement of grounds of appeal determines the extent to which amendment or cancellation of the appealed decision is requested (see e.g. G 9/92, Reasons 1)."
• G 9/92 r.1: "...  Proceedings under the EPC in respect of European patent applications and patents are, with some exceptions, initiated by a party. The initial "request" determines the extent of the proceedings. This is known as the principle of party disposition (ne ultra petita). The present case concerns the question whether the extent of the initial appeal, i.e. the statement in the notice of appeal, affects the extent of the subsequent proceedings, and this has to be examined systematically in conjunction with procedural law under the EPC." (emphasis added)
• G 9/92 is about reformatio in peius, i.e. the subject-matter of the patent (as amended), i.e. the order of the decision and not the reasons for the decision (there is quite some case law on this point). Opponent's 1 request in its notice of appeal was to revoke the patent in its entirety (link).  The TBA acknowledges that G 9/92 does not directly support its reasoning by citing it as 'see ... G 9/92').
• The Board's reasoning seems new to me.
• I also wonder how to reconcile it with the case law that there is no concept of partial inadmissibility of an appeal in the EPC.  
• The Board's headnote 1 is as follows: "1. ... The provisions of Article 107, second sentence, EPC guarantee a non-appealing party the right to participate to pending appeal proceedings. However, they do not provide it an autonomous right to have requests which go beyond the scope of the appeal as defined by the appellant's statement of grounds of appeal, decided by the board (as a direct consequence of G 2/91, Headnote)."
• This headnote puts it too strongly, in my view.
• The case is about a non-appealing opponent, not about a proprietor submitting claim requests. Furthermore, G2/91 is about the termination of the appeal if the appellant withdraws his appeal (heandnote 1) and the refund of the appeal fee (headnote 2).
• I think the 'reply' of the non-appealing second opponent should be treated as a case amendment under Article 13(1) RPBA, similar to the case where a respondent/appellant uses his reply under Art.12(1)(c) to the appeal of the other appellant as a supplement to his own statement of grounds (treated as an appeal case amendment under Art. 13(1), see T 2701/19).
• See also T 250/20 about cross-party reliance, referring to "established case law according to which, for example, an opponent may rely on a ground of opposition invoked by other opponents either during the opposition proceedings or during any subsequent appeal proceedings". This suggests that Opponent 2 can rely on the Statement of grounds of Opponent 1 and then submit any further attacks as case amendments under Art. 13(1).
• "By not filing an appeal, a non-appealing party has not contested the findings of the opposition division, beyond the framework of the appeal filed by the appellant."
• This does not seem correct, to the extent that it suggests the opponent as a respondent cannot introduce objections against the broader claims (sought by the proprietor as appellant) that were not decided on in the impugned decision. 

EPO 

The link to the decision is provided after the jump.