特許クレームにおいて使用される用語・語句約1万3千語について、判例や審決における定義と解釈を明らかにするレファレンス。用語・語句ごとに、*その定義 *外部証拠などで参照された資料(reference) *特許番号 *事件名とドケット番号（整理番号） *解釈のなされた訴訟の段階（stage） *権利者や侵害者等の当事者による定義、などの情報を附して収録。詳細な索引もついています。侵害判断、特許の鑑定、係争時、また出願ドラフティングに際して、疑問となる用語・語句が過去どのように解釈されたのかを、正確に確認することが可能となる実務レファレンスです。
2012年（2nd ed.）以来となる最新版では、バイオテクノロジー、薬学、クリーンテクノロジー等の分野における3500語が追加されています。

"An indispensable reference book for anyone who litigates patent cases." --Mark A. Lemley, William H. Neukom Professor, Stanford Law School

"It provides a very useful set of alternative constructions of words and phrases with citations from US patent cases and brief commentary...This two volume set also has insightful sections on means plus function elements, design patents and how to determine what 'ordinary skill' really means in the context of the patent you're looking at. With an index that runs to over 200 pages, it's also easy to find everything." --Duncan Bucknell, Think IP Strategy

"Claim language and claim construction are probably the most frequently debated legal issues in patent prosecution and patent litigation respectively. This book offers an invaluable resource and desk reference for parties to those debates." -- Dennis Crouch, Associate Professor of Law, University of Missouri School of Law, Author of Patently

"The Thesaurus of Claim Construction by Stuart Soffer and Robert Kahrl gives all stakeholders-lawyers, judges, patent owners, accused infringers and the public-a powerful tool to quickly access accepted definitions and point the way to useful references. Those who use it will save time and increase the odds of success in a patent litigation." -- James Pooley, Deputy Director General for Innovation and Technology, World Intellectual Property Organization

"The Thesaurus of Claim Construction will be of great service for both the courts and patent practitioners in determining how courts have defined specific terms, predicting how they may define new terms, as well as to simplify the complex and evolving claim construction process." -- David Stephenson, LoTempio Law Blog