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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.


LIDC is proud to announce that Licks Attorneys has become a Strategic Partner in 2026.

Licks Attorneys is a leading Brazilian law firm in litigation and intellectual property, renowned for its expertise in complex disputes and multidisciplinary strategies in high-profile cases involving disruptive technologies in sectors like telecom, pharmaceuticals, and chemistry. With a dedicated team of over 350 professionals, including more than 180 skilled attorneys and patent specialists with deep scientific and technical backgrounds, we have successfully managed over 3,000 cases since our inception. We represent global companies in landmark patent cases and have played a central role in recent litigation involving standard essential patents adjudication and licensing, biotech and agrochemical defense and regulatory delays. Our proven track record, strategic innovation and commitment to excellence make us the top choice for legal services in Brazil.

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What's next?

Upcoming activities
Tuesday 26 May
Competition infringements, Debarment and Self cleaning
Next congress
LIDC Congress 2026 - Bucharest, Romania, from 15 to 18th October 2026
We are pleased to inform you that the next LIDC Congress will be held in Bucharest, Romania, from 15 to 18th October 2026. Further details will follow in due course, but we kindly ask you to already save the date ! Please also find below the draft Question A and Question B, as well as the timeline for the Springer reports : Question A: “To what extent and in what way have the negotiated procedures (leniency, commitments, settlements and, where applicable, consent decrees) improved the effectiveness of Antitrust Law without unduly conflicting with fundamental principles such as the rights of…
LIDC Webinars serie
Competition infringements, Debarment and Self cleaning
The LIDC and LIDC Nex Gen will be holding a lunchtime webinar on 26th May 2026 at 14:00 - 15:00 pm (CET) / 13:00 – 14:00 (UK). During this webinar, our speakers will provide an analysis of the main competition law infringements , with a particular focus on the most significant enforcement practices (including collusive agreements and exchanges of sensitive information), as well as their legal, economic, and reputational implications. The session will also examine the exclusion from public tenders and the prohibition on contracting with the public sector under Spanish law, which have emerged as some of the most…
Events organized by the national groups
LIDC NexGen Weekend 2026 – Registration Now Open
Following the success of last year’s NexGen event organised by the Hungarian section in Budapest, the International League of Competition Law (LIDC) is pleased to announce that registration is now open for the LIDC NexGen Weekend 2026, which will take place in Paris from 5 to 7 June 2026. This annual event brings together young professionals and early‑career members of the global LIDC community for three days of academic discussions, interactive sessions, and networking opportunities centred on current and emerging issues in competition law, intellectual property, and related fields. 👉 Registration link: https://my.weezevent.com/week-end-nex-gen National Groups are warmly encouraged to share…