PatentCliff's proprietary grading system rates patent portfolios from A (strongest) to F (weakest) based on portfolio size, claims breadth, time remaining, and technology diversity.

Where does this data come from?

All patent data comes from the USPTO PatentsView API, maintained by the U.S. Patent and Trademark Office and updated weekly.

How are patent expirations calculated?

U.S. utility patents filed after June 8, 1995 expire 20 years from filing. Patents filed before that date expire 17 years from grant. Our calculations use standard rules but do not account for patent term adjustments or extensions.

Can I track when a specific patent expires?

Yes. Browse any company or drug patent page for expiration dates, or use the Expiring section to see all patents expiring in a given year.

Track when patentsexpire.

Top Patent Holders

IBM

Samsung

Huawei

Google

Microsoft

Apple

Canon

Amazon

LG

General Electric

Intel

Sony

Qualcomm

Siemens

TSMC

Toyota

Panasonic

Nvidia

Philips

Broadcom

Browse by Technology

Computing & Data Processing

Telecommunications

Electrical Components

Measuring & Testing

Medical & Veterinary Science

Information Storage

Combustion Engines

Bioinformatics & Healthcare IT

Electrical Power

Semiconductor Devices

Control & Regulation

Vehicles & Automotive

Patent Expirations by Year

Drug Patent Watch

Ibrance

Farxiga

Dupixent

Vyvanse

Trikafta

Herceptin

Humira

Ozempic

Verzenio

Tremfya

Lynparza

Keytruda

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Frequently Asked Questions

What is a Patent Strength Score?

Where does this data come from?

How are patent expirations calculated?

Can I track when a specific patent expires?

Track when patents
expire.