Primary Evidence
Sources and Evidence
Every factual patent claim should be traceable to an identifiable public patent record or official source.
United States Patent and Trademark Office
Federal patent and trademark records are used as primary government sources.
Visit primary sourceGoogle Patents
Source-linked patent pages provide readable bibliographic and citation records.
Visit primary sourceWorld Intellectual Property Organization
International patent publications are checked against WIPO records when applicable.
Visit primary sourceOther national patent offices
National records are linked when a cited record was published outside the United States.
Haptic Zones research datasets
The public evidence pages present verified snapshots, counting rules, corrections, and source links.