Google Patents
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.
Search for patents | USPTO
Oct 17, 2025 · Find existing patents, published patent applications and other published patent documentation
Patent - Wikipedia
The costs of preparing and filing a patent application, prosecuting it until grant and maintaining the patent vary from one jurisdiction to another, and may also be dependent upon the type and …
Espacenet – patent search
Apr 12, 2025 · Espacenet provides free access to over 120 million patent documents worldwide, enabling users to search, download, compare, and translate patents.
PATENTSCOPE - WIPO - World Intellectual Property Organization
Free search of international patent applications filed under the PCT System and in many national collections.
U.S. Patent and Trademark Office (USPTO) | USAGov
The U.S. Patent and Trademark Office (USPTO) is the agency responsible for granting U.S. patents and registering trademarks.
Patents | USPTO - United States Patent and Trademark Office
Find out how to apply for and maintain a patent in the U.S., and learn about helpful resources.
U.S. Patent, Patent Application and Patent Search - Justia Patents …
Search and research millions of U.S. patents for free on Justia.com.
Patent Public Search | USPTO
Sep 27, 2025 · The Patent Public Search tool is a web-based search application for patents and patent application publications. Patent Public Search has two user-selectable modern …
Google Patents Advanced Search
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.