T 2210/21 (ARCH CHEMICALS / ISOTHIAZOLINONE BIOCIDES) 23-10-2024
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ISOTHIAZOLINONE BIOCIDE ENHANCED BY ZINC IONS
I. The appeal by the opponent lies from the decision of the opposition division to reject the opposition against European patent No. 3 262 941 ("the patent").
II. The opponent/appellant contested the opposition division's reasoning and requested that the appealed decision be set aside and that the patent be revoked.
III. In its reply to the appeal, the patent proprietor/respondent requested that the appeal be dismissed, meaning that rejection of the opposition be confirmed and that the patent be maintained as granted. Alternatively, it requested that the patent be maintained in amended form on the basis of the claims of one of auxiliary requests 1 or 2 filed on 2 June 2020.
IV. The board summoned the parties to oral proceedings to be held on 16 September 2024.
V. By letter dated 29 August 2024, the patent proprietor withdrew its approval of the text of the patent as granted as well as of the claims of all auxiliary requests on file. The patent proprietor also withdrew its request for oral proceedings and stated that it expected "that the patent be revoked without going into any substantive issue".
VI. By communication dated 5 September 2024, the board cancelled the oral proceedings.
1. Under Article 113(2) EPC, the European Patent Office shall examine, and decide upon, the European patent only in the text submitted to it, or agreed, by the proprietor of the patent.
2. Since the patent proprietor withdrew its approval of the text of the granted patent as well as of the claims of all auxiliary requests on file there is no text of the patent submitted or agreed by the patent proprietor, on the basis of which the board can consider compliance with the requirements of the EPC.
3. It is established case law of the Boards of Appeal (see T 73/84, OJ EPO 1985, page 241, T 186/84, OJ EPO 1986, page 79, T 798/90, T 463/90, T 14/99, T 1844/17, T 3007/18, T 320/19, T 411/20) that under these circumstances the patent is to be revoked without further substantive examination. There are also no ancillary issues that would have to be dealt with by the board in the present case.
For these reasons it is decided that:
1. The decision under appeal is set aside.
2. The patent is revoked.