We are working to create a site that helps track the estimated expiration dates of software patents

Our goal is to make a community resource that lists the estimated expiration dates of important software patents. We aim to do this by making it easy for a collaborative effort to add, track and search for patents that affect your software or software you are interested in.

The rise of software patent litigation has put a spotlight on software patents and we hope so create a simple resource for tracking when an important patent enters the public domain.


Patent: Fixed-rate block-based image compression with inferred pixel values

Estimated expiry: Oct 2, 2017

A.K.A: S3TC or S3 Texture Compression patent

Importance: The wide use of S3TC has led to a requirement for OpenGL drivers to support it, but the patent-encumbered status of S3TC presents a major obstacle to open source implementations.

NOTICE: This website provides general information only, not legal advice. You should not act upon this information without independent legal counsel. The information on this website is not guaranteed to be current, complete or accurate.