T 0492/93 () of 10.8.1993

European Case Law Identifier: ECLI:EP:BA:1993:T049293.19930810
Date of decision: 10 August 1993
Case number: T 0492/93
Application number: 84307302.4
IPC class: C09K 7/02
Language of proceedings: EN
Distribution: C
Download and more information:
Decision text in EN (PDF, 112 KB)
Documentation of the appeal procedure can be found in the Register
Bibliographic information is available in: EN
Versions: Unpublished
Title of application: Materials for use in drilling muds
Opponent name: SNF Floerger
Board: 3.3.01
Headnote: -
Relevant legal provisions:
European Patent Convention 1973 Art 111(1)
European Patent Convention 1973 Art 113(2)
Keywords: Revocation of European patent on request of proprietor
Basis of decisions - patentee (request for revocation by)


Cited decisions:
T 0186/84
T 0237/86
T 0459/88
Citing decisions:

Summary of Facts and Submissions

I. An appeal, which was duly lodged by the Appellant/ Opponent against the interlocutory decision of the Opposition Division of the European Patent Office dated 25 March 1993 concerning maintenance of European patent No. 0 144 140 in amended form requested that the decision be set aside and that the patent be fully revoked.

II. In a letter filed on 2 August 1993, the Respondent/ Patentee stated the following: "The Patentee no longer approves of the text of the granted patent. The patent may therefore be revoked".

Reasons for the Decision

1. The appeal is admissible.

2. The Patentee has made clear in his letter received on 2 August 1993 that he wishes his patent to be revoked. In these circumstances, there can scarcely be any more cogent reason for revoking it since it cannot be in the public interest to maintain a patent against its proprietor's will.

The Board has, therefore, in the exercise of its power under Article 111(1) EPC, decided to revoke the European patent (Article 102 EPC). (See Decisions T 237/86, OJ EPO 1988, 261; T 186/84, OJ EPO 1986, 79 and T 459/88, OJ EPO 1990, 425.)


For these reasons, it is decided that:

1. The decision under appeal is set aside.

2. European patent No. 0 144 140 is revoked.

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