Patent Act of 1952

The U.S. Patent Act of 1952 clarified and simplified existing U.S. patent law. It also effected substantive changes, including the incorporation of the requirement for invention (35 U.S.C. §103) and the judicial doctrine of contributory infringement (35 U.S.C. §271).

The Act originally divided the patent law into three parts:

A later amendment added

Other amendments to Title 35 concern the renaming from "Patent Office" to "Patent and Trademark Office"; revised fee schedules for application and issue of patents; and modifications in procedures related to the protection of patents.

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