Patent & Trademark Resource Center
The Engineering & Physical Sciences Library is the College Park Patent & Trademark Resource Center
EPSL became a Patent & Trademark Depository Library January 1984; renamed PTRC October 2011
The U.S. Government grants a patent to an inventor "to exclude others from making, using, offering for sale, or selling the invention throughout the United States or importing the invention into the United States."
A trademark is a word, phrase, symbol or design, or combination of words, phrases, symbols or designs, which identifies the source of goods or services of one party from those of another.
Patent News in Lay Person's Terms
Inventive Step is a blog dedicated to a discussion of patent law issues and strategies and focusing on new developments in patent law. The blog focuses primarily on court decisions, legislation, and new Patent Office regulations, but may also cover other news and commentary on issues of relevance to patent professionals, inventors, technology companies, and others having an interest in patent law.
Patent Search Aids
Trademark Search Aids
Patent Expiration Date Calculator
This calculator provides a best estimate of the expiration date of a utility, plant, or design patent, based on a comprehensive list of factors than can be found in USPTO records. Download Calculator
Before relying on an expiration date, individuals should always carefully inspect all relevant documents available through the USPTO, court records and elsewhere, and consult with an attorney.
Patents Guide by Mike White. Queens University, Ontario.
End-User Patent Searching Using Open Access Sources by Pat LaCourse. Engineering and Science Librarian. New York State College of Ceramics.
Patents Guide: "Help for Researchers". British Library
"Patents, Copyrights, & Trademarks" , by National Paralegal College. Extensive guide; made for a college audience but recommended to us by a teacher of advanced middle school students.