Patent disputes

This document provides an overview of the Practice Notes, Precedents and Flowcharts contained in the Patent disputes subtopic. For information about the contents of the Patent transactions and management subtopic, see: Patent transactions and management—overview.

Multi-jurisdictional patent litigation

In today’s global economy, patent proprietors may find it necessary or desirable to enforce their patent rights in multiple countries. There are many things to consider when developing and implementing a global patent litigation strategy, including identifying countries of interest, potential defendants, and relevant patents, and then assessing the legal framework in each country of interest in light of the patent proprietor’s overall litigation goals.

For more information about the strategy considerations involved in multi-jurisdictional patent litigation, see Practice Note: Multi-jurisdictional patent litigation—strategy.

Patent infringement

Patent infringement occurs when certain acts are performed in relation to a patented invention without the consent of the patent proprietor. These acts include making, using, selling, or importing a patented product, or using a patented process. For more information about patent infringement, see Practice Note Patent infringement.

Anyone writing or sending a letter or other communication alleging, or even implying,

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Latest IP News

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Use of AI tools at the UKIPO, EPO and USPTO

IP analysis: Artificial intelligence (AI) tools are increasingly being explored by patent offices worldwide as a means of improving efficiency, consistency, and search quality. For patent applicants and attorneys, understanding how these tools are used, and just as importantly how they are not used, is essential. This article considers the current position at the UK Intellectual Property Office (UKIPO) the European Patent Office (EPO) and the United States Patent and Trademark Office (USPTO). All three offices stress the continued importance of human judgment emphasising that patent examiners, and indeed applicants, must critically assess any outputs generated by AI-assisted tools. This review, by Anton Baker of D Young & Co, gives examples of current tools being developed and used by the offices.

Lego can’t revive EU design IP for clip block

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IP weekly highlights—15 January 2026

This week's edition of IP weekly highlights includes: a hand-picked summary of news analysis, updates and new content from the world of IP. These highlights focus on the key rights of copyright and associated rights, database rights, trade marks and passing off, designs, and patents as well as covering issues relating to confidential information, know-how R&D and IP disputes.