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ARTICLE · 03 AUGUST 2026

EPO Oppositions – Strategy, Procedure And Practical Insights (Video)

J A Kemp
J A Kemp
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J A Kemp

J A Kemp

J A Kemp is one of the largest European patent and trade mark attorney firms, with offices in...

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EPO oppositions remain one of the most powerful tools for challenging the validity of a European patent after grant. They offer a centralised and cost-effective route to attack any European patent with effect across...

United StatesIntellectual Property

EPO oppositions remain one of the most powerful tools for challenging the validity of a European patent after grant. They offer a centralised and cost-effective route to attack any European patent with effect across all 40 EPC contracting states.

In this webinar, J A Kemp’s experienced European patent attorneys provide practical insights into EPO opposition practice and potential procedural pitfalls to guard against or exploit, drawing on their extensive experience in both attacking and defending patents before the EPO.

Topics covered include: 

  • The initial opposition and defence – how to best set up your case
  • Amendments and auxiliary requests – how many is too many?
  • Adding to your case – when to do it and navigating the “late-filed” problem

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The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

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