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U.S. Patent and Trademark Office
The Official US Patent and Trademark Office provides a great deal of information and resources for patent, trademark and copyright protection.

A useful resource for patent searching, provided by Google, which allows a user to search through issued patents. The only disadvantage to this site is that it does not search published applications, it only searches issued patents.

Free Patents Online
Another useful resource for patent searching that is free and also provides you with a pdf of the patent, which is very useful. This website searches published applications as well as European applications, abstracts from Japan and WIPO (PCT) documents, to ensure a more accurate search.

SAS Institute Inc. v. Andrei Iancu, Director USPTO, et al Opinion (PDF)
Links to Supreme Court opinion regarding inter partes review (IPR) and patentability of claims.

Alice Corp. v. CLS Bank Opinion (PDF)
Links to Supreme Court opinion on patentable subject matter as it pertains to certain forms of software.

KSR v. Teleflex Opinion (PDF)
Link to Supreme Court opinion on obviousness for patentability purposes. This opinion may affect the scope of currently issued patents and the ability to obtain patent protection in the future.

Manual of Patent Examining Procedure (MPEP)
The MPEP, provided by the USPTO, is a reference for examiners, applicants and attorneys on the practices and procedures related to the prosecution of patent applications before the USPTO. It also provides an appendix with all of the patent laws (Title 35 of the US Code) and an appendix with all of the patent rules (Title 37 of the Code of Federal Regulations).

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