Insights
The register in numbers: what lapses, when, and who used to own it. Drawn from the same USPTO records as every patent page, updated with each refresh.
120,883patents listed
180,980US patents lapsed in the past year
2,726reinstated after a late payment, and left out
8percent from solo inventors, with no company named
Lapses every week
Patents the Official Gazette listed as expired for an unpaid maintenance fee, issue by issue.
By field
Where the register's patents sit. Each field links to its list.
When owners stop paying
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. Share of listed lapses by the fee that went unpaid.
Most frequent former owners
Companies whose lapsed patents appear most often here.
- International Business Machines Corporation2,562
- Canon Kabushiki Kaisha1,243
- Hewlett-Packard Development Company, L.P.1,147
- INTERNATIONAL BUSINESS MACHINES CORPORATION1,126
- Intel Corporation949
- Apple Inc.943
- Samsung Electronics Co., Ltd.922
- Microsoft Corporation917
- BOE TECHNOLOGY GROUP CO., LTD.916
- FUJITSU LIMITED835