Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature.

Find out how to apply for and maintain a patent in the U.S., and learn about helpful resources.

Home page of the United States Patent and Trademark Office's main web site.

This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections. This search facility features: flexible search …

Espacenet provides free access to over 120 million patent documents worldwide, enabling users to search, download, compare, and translate patents.

The word patent originates from the Latin patere, which means "to lay open" (i.e., to make available for public inspection). It is a shortened version of the term letters patent, which was an open document …

Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature.

Free search of international patent applications filed under the PCT System and in many national collections.

The U.S. Patent and Trademark Office (USPTO) is the agency responsible for granting U.S. patents and registering trademarks.

Homepage of the European Patent Office. In SP2028, the EPO will have one goal: sustainability. Our people, technologies, high-quality products and services, the partnerships the EPO develops and …

Search and research millions of U.S. patents for free on Justia.com.