Opposition Matters 2023

Opposition Matters

Opposition Matters is the EPO's leading event for professional users wanting to keep up to date with the latest and most relevant developments in opposition proceedings.

Event details

Registration open
13:00 - 17:30 h
9:15 - 13:00 h

Preliminary programme

Please note that the time zone for the programme is CET and timings are subject to change.

Moderator: Dominika Baráč, examiner & programme area manager Patent attorneys, EPO

Thursday, 23 November 2023
13.00 hrs


13.10 hrs Latest developments in opposition proceedings
13.25 hrs

Panel discussion
Opportunities with UPC and Opposition

14.30 hrs Break
14.45 hrs

“Inventive step-how to convince an Opposition Division?”

15.45 hrs Panel discussion
Constructive participation of all parties in oral proceedings to arrive at a qualitative decision
16.45 hrs Closing by moderator
17.00 hrs Voluntary virtual networking
17.30 hrs End of day 1
Friday, 24 November 2023
09.15 hrs Presentation
How to avoid pitfalls - Article 123(2) EPC/ Article 123(3) EPC
10.15 hrs Presentation
Taking of evidence
11.00 hrs Break
11.15 hrs Presentation
Update on quality management in opposition
11.45 hrs Panel discussion
How to deal effectively with Auxiliary requests
12.45 hrs Wrap-up
13.00 hrs Closing of conference by moderator


Will be published in due course

More information

Speakers from several EPO departments, co-presenting alongside senior European patent attorneys, will provide insights into the best practices they have developed over years of opposition experience.

This year's event will address relevant developments of procedural and substantive aspects of opposition proceedings. Panel discussions will round up this year’s conference.

This high-level event is once again organised in close co-operation with the epi.  

Who should attend

This event is intended for patent attorneys, and particularly those who are active in opposition proceedings before the EPO.

Registration and payment

Registration fee

EUR 0 (online participation)

On the occasion of the 50 years of the EPC the online attendance to this years' conference is free of charge.

Registration deadline

21 November 2023

Technical requirements

You will receive the Zoom link to join the event latest one day before the conference.

To attend the online part of the event you need a computer or mobile device with a high-speed internet connection. However, to take advantage of all Zoom features, we strongly recommend installing the Zoom desktop client app on your computer (Windows and Mac versions available). To join via mobile device, simply download the Zoom mobile app for your iOS or Android device from the App Store or Google Play Store.

You can also access Zoom from a web browser (Google Chrome, Mozilla Firefox or Chromium (Microsoft) Edge) without downloading any additional software, however some features (like selecting microphone, speaker or camera, entering breakout rooms, downloading files from the chat) might then be restricted.

We recommend using a headset to enhance your Zoom experience.

Recording and data protection

Please be informed that event will be recorded and that the recorded material will be used for documentation and promotional purposes.

Please see the Data Protection Statement of the European Patent Office on processing personal data when using Zoom in virtual events, including oral proceedings by VICO.

Organised by

European Patent Academy
European Patent Office
Bob-van-Benthem-Platz 1
80469 Munich



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