The European Patent Office (EPO) provides a uniform application procedure for individual members and companies seeking patent protection in up to 37 European countries.
Easy searching for U.S. patents, but with a number of limitations--it excludes patent applications, international patents, and U.S. patents issued over the last few months.
"The Lens is an open global cyberinfrastructure to make the innovation system more efficient and fair, more transparent and inclusive." (from their website)
PIUG, the International Society for Patent Information, is a not-for-profit organization for individuals having a professional, scientific or technical interest in patent information.
The San Jose Public Library is a Patent and Trademark Resouce Center (PTRC). PTRCs are a nationwide network of public, state and academic libraries designated by the United States Patent and Trademark Office (USPTO) to support the public with trademark and patent research assistance.
The Silicon Valley USPTO serves California, Nevada, Oregon, Washington, Arizona, Alaska, and Hawaii. It provides outreach services for inventors, entrepreneurs, startups, researchers, and others.