Google Patents (patents.google.com)
Google Patents, or patents.google.com, is a search engine developed by Google that indexes patents and patent applications from over 15 different countries. Unlike a simple, literal database query, Google Patents’ search engine appears to draw data from numerous sources to discern what results may be most relevant, making it a useful tool when searching for particular patents, conducting prior art searches, or analyzing portfolios.
Patent Application Information Retrieval (PAIR)
Patent Application Information Retrieval, or PAIR, is a system located within the USPTO website for displaying information regarding patent application status. Public PAIR in particular is designed to provide public access to the dockets, file histories (also known as “file wrappers”), and application data of published patent applications. The system has only very limited search functionality, so you will need an exact patent, application, or publication number to find documents on Public PAIR.
USPTO Patent Search Tools
The USPTO website contains a wide variety of search resources including, among other things, the Patent Full-Text and Image Database (PatFT), and the Patent Application Full-Text and Image Database (AppFT).
Patent Trial and Appeal Board End to End (PTAB E2E)
The Patent Trial and Appeal Board End to End, or PTAB E2E, is a system within the USPTO website for filing and reviewing documents in ongoing proceedings at the PTAB, such as inter partes review, post-grant review, etc.
Patent Assignment Database
The Patent Assignment Database is a searchable database containing all recorded patent assignment information.
Manual of Patent Examining Procedure
The Manual of Patent Examining Procedure, or MPEP, sets forth the laws and regulations that must be followed in the examination of patent applications. The MPEP is published by the United States Patent and Trademark Office for use by both patent attorneys and examiners.