Electronic Frontier Foundation

The Electronic Frontier Foundation (EFF) is an American international non-profit digital rights group based in San Francisco, California, founded in 1990 by John Gilmore, John Perry Barlow, and Mitch Kapor. As a 501(c)(3) organization, it is privately owned and supported primarily by individual donations, foundation grants, and corporate donations. As of 2025, EFF had approximately 121 employees, with estimated annual revenues around $21.5 million.

EFF is dedicated to defending civil liberties in the digital age, focusing on privacy, free expression, digital rights, and online security. Its operations include impact litigation, policy analysis, grassroots activism, and technology development. The organization champions user privacy and innovation, working to ensure technology supports freedom and justice globally.

In terms of patent litigation, EFF acts as a public interest advocate rather than an operating company or a typical patent assertion entity. The provided data shows one plaintiff case and zero defendant cases, exclusively at the Patent Trial and Appeal Board (PTAB). This posture is consistent with its mission to challenge patents it considers abusive or without merit.

A notable case is Electronic Frontier Foundation v. Personal Audio LLC in 2013, where EFF, as the plaintiff, challenged the validity of a patent (US 8,112,504) that Personal Audio LLC had asserted against podcasters. Supported by public donations, EFF filed an inter partes review (IPR) petition at the USPTO, successfully arguing that Personal Audio did not invent anything new and that podcasting existed prior to the patent application. The PTAB invalidated the challenged claims, a decision affirmed by the Federal Circuit and upheld by the Supreme Court when it denied Personal Audio's petition for review.