Patent Case Law and Intellectual Property Practice Blog

Explore articles on claim interpretation, the doctrine of equivalents and product-by-process claims. Consult the individual articles and their sources for the facts and discussion of each case.

Read the Japanese version / 日本語版を読む Tokyo District Court, Case No. 2024 (Wa) 70460 [Widening structure for a shield tunnel] (Presiding Judge Nakajima) *Claim requirements not satisfied (the doctrine of equivalents also not established). In interpreting the claim wording "filling a temporary filling case with filling material," the court held that "temporary filling case" means a container to be "filled" with "filling material," while "filling material" means raw material for

Read the Japanese version / 日本語版を読む Osaka District Court, Case No. 2024 (Wa) 7055 [Taxi dispatch management system] (Presiding Judge Matsuami) *Claim requirements not satisfied (the doctrine of equivalents also not established). "Taxi (information)" in claim element C means individual vehicles (information about them). ⇒ A "dispatch confirmation request specifying the taxi desired by the user" in the invention means a request to dispatch the particular taxi selected by the us