T 1240/20 09-01-2024

Summary of Facts and Submissions

I. The opponent appealed against the Opposition Division's decision to reject the opposition to the European patent.

The patent was opposed on the grounds of insufficiency of disclosure, lack of novelty and lack of inventive step.

II. In a communication, the Board informed the parties of its intention to remit the case to the Opposition Division and order the reimbursement of the appeal fee by reason of a substantial procedural violation. Furthermore, it observed that a decision to this effect could be issued in writing if the parties withdrew their requests for oral proceedings.

III. The parties withdrew their requests for oral proceedings on condition that the Board decided to remit the case.

IV. The appellant requested that the decision under appeal be set aside and that the patent be revoked. It also requested reimbursement of the appeal fee by reason of a substantial procedural violation.

The respondent requested that the appeal be dismissed or, in the alternative, that the patent be maintained on the basis of one of auxiliary requests 1 to 5, filed with the reply to the statement of grounds of 3 December 2020, and 6 and 7, filed by letter dated 18 May 2021.

V. Claim 1 of the patent as granted (main request) reads as follows.

"A system (10) for sensing a physiological parameter for use in conjunction with a remote processor that is external to the system, the system comprising:

a physiological sensor (12) coupled to the remote processor, and adapted to output a sensor signal representative of a sensed physiological parameter to the remote processor;

a microcontroller (16) located locally within the system and fixedly attached to the physiological sensor (12), the microcontroller adapted to exchange data with the remote processor, the microcontroller (16) having a first memory (14) and a second memory (22); wherein the first memory (14) is adapted to store an authentication algorithm and the microcontroller (16) configured to engage in an authentication process through the authentication algorithm to ensure that the physiological sensor is appropriate for use when queried by the remote processor; characterised in that the second memory (22) is configured to receive processed sensor data from the remote processor and store at least the processed sensor data and calibration information pertaining to the physiological sensor (12); and

wherein the authentication process is configured to ensure that the physiological sensor is of a type that has calibration information stored thereon."

VI. The appellant's arguments, where relevant to the present decision, may be summarised as follows.

The Opposition Division had committed a substantial procedural violation in that it had ignored the appellant's arguments on insufficiency of disclosure. Hence, the appellant had been deprived of its right to be heard.

More specifically, the Opposition Division had ignored the objection that the patent was completely silent on any specific feature of an authentication process that would "ensure that the physiological sensor is of a type that has calibration information stored thereon", as specified in claim 1 of the patent as granted. The authentication described in the patent merely verified sensor identity. The authentication algorithm could not determine whether calibration information was stored on the sensor.

This objection had been raised in the notice of opposition, and reiterated in the letters of 24 May 2019 (item 2 on page 2) and 13 December 2019 (page 4, penultimate paragraph, to page 5, first paragraph).

In the impugned decision, the Opposition Division had merely stated that "the specific definition of the authentication process carried out by the microcontroller could be considered to be to a certain extent unclear" but had provided no explanation of where or how the patent disclosed any authentication process capable of ensuring that the physiological sensor was of a type that actually had calibration information stored thereon.

According to T 763/04, in line with other case law of the Boards of Appeal, Article 113(1) EPC required not merely that a party be given an opportunity to voice comments, but more importantly it required that the deciding instance demonstrably heard and considered these comments.

The question of sufficient disclosure had in fact been discussed before the Opposition Division, given that the first-instance proceedings comprised written proceedings prior to the oral proceedings. The Opposition Division's failure was merely to duly consider the opponent's arguments on that point.

The appellant agreed to remittal of the case to the Opposition Division for further prosecution without oral proceedings being scheduled beforehand.

VII. The respondent's arguments, where relevant to the present decision, may be summarised as follows.

It was established jurisprudence that it was not necessary to consider each and every argument of the parties in detail in a decision (Case Law of the Boards of Appeal, V.B.4.3.10.b)). The impugned decision was clear: the Opposition Division had considered that the appellant's arguments presented under Article 100(b) EPC in fact concerned Article 84 EPC.

The Opposition Division was of the opinion that the lack of disclosure asserted by the appellant was a matter of clarity, and thus not a ground for opposition, so it was not discussed before the Opposition Division.

The patent proprietor agreed to the Board's proposal to continue the proceedings regarding a remittal of the case to the Opposition Division by written procedure, and withdrew its request for oral proceedings.