Baldwin Son & Carey - expertise in all disciplines of patents, trademarks, designs, copyright, licensing, branding, searching and IP litigation, both in New Zealand and overseas.
U.S. Patent and Trademark Office (PTO) - The PTO is a non-commercial federal entity and one of 14 bureaus in the Department of Commerce (DOC). Its major functions are the examination and issuance of patents and the examination and registration of trademarks.
MicroPatent - MicroPatent is a global leader in the production and distribution of patent and trademark information, providing Internet, Intranet, and CD-ROM database solutions.
STO's Internet Patent Search System - a way for people around the world to perform patent searches, and access information on the patenting process.
Chemical Patents Plus - free searching of fulltext U.S. patent documents from 1971, with complete patent page images from 1993, and many JAVA-rotateable 3D chemical structures, from CAS.
National Patent Services - Affordable patent searches and applications. Located 5 minutes from the U.S. Patent Office.
Hagemann & Kehl - specializing in patents, trademarks, designs, licensing, and searches in the electronic, mechanical, computer, and chemical sciences fields.
Litman Law Offices, Ltd - providing intellectual property services to independent inventors. Services include patent searches, applications, trademarks, copyrights and licensing.
PatentPro - Patent Application Software.
PatentQuest - patent searching at USPTO.
Kroll, Micheal - Attorney - patents, trademarks, copyrights, searches, invention development, intellectual property law, trade secrets, development and marketing, and other services to inventors.
Law Offices Of Michael Kroll - Intellectual property, patents, trademarks, copyrights, searches, trade secrets, and inventions.
Brian L. Longest & Associates - searches computer related inventions.
Napatco, Ltd. - providing trademark & patent searches & registrations.
Cruzeiro/Newmarc - specializing in patents, trademarks, designs, copyrights, searches and all other intellectual and industrial property matters; headquartered in Brazil - Sao Paulo and Rio.
Optipat Inc. - provides online patent searching, and custom CD-ROM products, ranging from raw patent text, to indexed full patent text and image CDs.
Sunnyvale Center for Innovation, Invention & Ideas - a U.S. Patent and Trademark Depository Library (PTDL) which serves as a research facility for patent and trademark searching.
Shadow Patent Office (SPO) - easy-to-use, highly effective patentability and infringement searches against the full-text of the 1.7 million U.S. patents issued since January, 1972. offers free search of recent titles, and more extensive search for fee.