To access all contents, news and services.

The International League of Competition Law (LIDC) is a long-standing international association, which was created in 1930. The LIDC focuses on the study of competition law, intellectual property law and unfair competition law. It is a unique platform for exchanging and developing ideas and knowledge on the intersection of competition, intellectual property and unfair competition laws, both at national level and in an international setting.

The LIDC’s is constituted by National Groups that agree with the LIDC’s purposes and participate in its activities. Individual members from countries where no national group is currently constituted can also become an LIDC member.

Follow the LIDC on LinkedIn for more contents and news !

What's next?

Upcoming activities
Thursday 21 September
Gothenburg Congress 2023
Next congress
Gothenburg Congress on 21-24 September 2023
The next LIDC Congress will be held in Gothenburg in Sweden on 21-24 September 2023. The questions that will be discussed are the followings: "Question A: Do recent developments in enforcement, case-law, and guidance from competition authorities and regulators make the delineation between legitimate and efficient purchasing and supply arrangements and infringing conduct sufficiently clear in practice that businesses and their advisors know how to stay on the right side of the law?" ; "Question B: What mechanisms exist to avoid over-broad trademarks and address concerns that the trademark registers are clogged (e.g. bad faith in Sky v SkyKick; requirements for…
LIDC Webinars serie
LIDC/NexGen Lunchtime Webinar: Thursday 20 April 2023: "Green Claims as an Unfair Commercial Practice
The Ligue Internationale de Droit de la Concurrence (LIDC) and Nex Gen will be holding a lunchtime webinar on Thursday 20 April from 1pm to 2.00 pm (CET) on: “Green Claims as an Unfair Commercial Practice” Speakers: Martin Zeitlin Dr. Tudor Vlah, LL.M.B There will be no charge for attending this event. To register for this event: please email the LIDC Secretariat: ( An online link to join the webinar will be circulated via email to all those who have registered. The webinar will be conducted in English. Registration will close midday on Wednesday 19 April. Kind regards, The LIDC…
Events organized by the national groups
Competition Law Association: Evening Meeting - Where Competition and IP Meet! - Wednesday 1 March 2023
We are pleased to announce that the CLA will be holding an evening meeting on Wednesday 1 March at 6pm at Matrix Chambers. The Hon Mr Justice Marcus Smith has kindly agreed to speak on the following topic: “Where Competition and IP Meet!” To register for this event, please visit the “new events” section of the CLA website: Online registration will close on Tuesday 28 February Please note CLA substitutions policy: If an existing member has registered for an event, but is unable to attend, that member may substitute a colleague without charge, provided that the existing member confirms…