About PatentClock
Our Mission
PatentClock was built to solve a critical problem in intellectual property management: accurately tracking patent expiration dates. Patent attorneys and IP professionals need precise, reliable information to protect their clients' innovations, but calculating expiration dates manually is complex and error-prone.
We built PatentClock to provide transparent, accurate patent expiration calculations with detailed breakdowns showing exactly how each date was determined.
Why PatentClock?
- ✓Accuracy First: Our calculations account for Patent Term Adjustment (PTA), Patent Term Extension (PTE), terminal disclaimers, and maintenance fee status.
- ✓Complete Transparency: See exactly how each expiration date is calculated with detailed breakdowns and confidence scores.
- ✓Never Miss a Deadline: Automated email alerts ensure you're notified well in advance of any patent expiration.
- ✓Built for Professionals: Clean, professional interface designed for attorneys and IP professionals who need trustworthy tools.
The Technology
PatentClock integrates with the USPTO PatentsView API to fetch official patent data, including filing dates, grant dates, and term adjustments. Our proprietary algorithm then calculates expiration dates using the same rules defined in 35 U.S.C. § 154, accounting for:
- • GATT vs. pre-GATT patent term rules
- • Patent Term Adjustment (PTA) for USPTO delays
- • Patent Term Extension (PTE) for regulatory review delays
- • Terminal disclaimer limitations
- • Maintenance fee payment status
- • Design patent special rules (15 years from grant, no maintenance fees)
Disclaimer
PatentClock provides estimated patent expiration dates based on available data from the USPTO. While we strive for accuracy, these calculations are for informational purposes only and should not be considered legal advice. Always verify critical dates with official USPTO records and consult with a qualified patent attorney for legal matters.