Key points
- The Board does not admit experimental report D25, filed two days before the oral proceedings.
- " The indication by the Board in section 13.2 of the communication that it might be necessary to address the relation between the structural feature of the claims (structure of the catalysts) and their ability to solve the problem allegedly solved by the claimed subject-matter [] was not an invitation to file additional experimental data. The point raised by the Board [] refers not only to the usual and necessary analysis for assessing the success of the solution proposed by the patent under examination, but also stems from the criticism exercised by the opponent that claim 1 covers a very broad range, while some of the claimed catalyst composition had not been shown to solve the technical problem underlying the patent in suit. Accordingly, the patent proprietor should not have waited until two days before the oral proceedings and more than two and an half years after the last substantive submissions of the opponent to file experimental data D25, but submit it in a timely manner to allow the opponent sufficient time to provide a response thereto. "
Admittance of D24 and D25
3. The filing of experimental reports D24 and D25, submitted after the summons to attend oral proceedings, respectively after the subsequent Board's communication, represents an amendment to a party's case and their admission to the proceedings is subject to the Board's discretion pursuant to Articles 13(1) RPBA taking into account the additional condition of Article 13(3) RPBA. Their late submission was, according to the patent proprietor, not only due to a change of the patent proprietor and responsibility within the company making it difficult to get experimental data to address the inventive step issue, but also triggered by the new focus brought by the Board in its communication on the question whether all catalyst packages falling within the ambit of claim 1 could provide polyurethane foams and/or provide the alleged reduction of VOC and FOG values.
3.1 The theoretical possibility that D24 would be a reaction to the communication of the Board must be excluded as D24 and its accompanying submissions were filed earlier than the Board's communication. The submission of D24 with letter of 2 June 2017 concerning the use of amino-ethyl-piperazine and N,N-dimethyl-dipropylenetriamine as gelling catalysts is rather in response to the submissions of the opponent of 29 December 2014 with experimental report D23, as confirmed in section 3.1 on page 11 of the letter of the patent proprietor of 2 June 2017 (those catalysts were referred to as catalysts G and H by the opponent) Hence, the difficulties related to the assignment of the present patent to another proprietor also cannot justify the filing of D24, since said assignment took place on 3 January 2017 as indicated with letter of the new patent proprietor of 23 March 2017, i.e. 2 years after the submission of D23 which let ample time for the former proprietor to submit an appropriate response thereto.
3.2 Therefore, the Board does not find any justification for the late filing of D24 and taking into account the relevant criteria, in particular the principle of procedural economy, finds it appropriate to exercise its discretion by not admitting document D24 into the proceedings (Article 13(1) RPBA).
3.3 Concerning D25, this experimental report provides additional data concerning the use of N,N,N'-trimethyl-N'-3-aminopropylbis(aminoethyl) ether as blowing catalyst in combination with the 3 gelling agents used in the examples of the patent in suit, but varying the catalyst concentration or the isocyanate index, and the use of N,N,N'-trimethyl-N'-2-hydroxyethylbis- (aminoethyl) ether together with dimethylaminopropyl-amine. Its purpose is to demonstrate that the combinations of blowing and gelling catalysts within the definition of the present claims result in reduced emissions expressed in terms of VOC and FOG values. The issue whether the catalyst packages falling within the ambit of claim 1 could provide polyurethane foams and/or provide the alleged reduction of VOC and FOG values, i.e. whether the problem mentioned by the patent proprietor could be considered to be successfully solved across the whole area claimed, is not only standard practice when assessing inventive step, but also as indicated in section 13.2 of the Board's communication a point raised by the parties in appeal proceedings (see letter of the opponent of 29 December 2014, pages 5 to 8, points 11 to 19). The indication by the Board in section 13.2 of the communication that it might be necessary to address the relation between the structural feature of the claims (structure of the catalysts) and their ability to solve the problem allegedly solved by the claimed subject-matter (ability to form foams and reduce emission values) was not an invitation to file additional experimental data.