The patent system is broken. Companies, often referred to as patent trolls, are buying up broad patents and using them to threaten businesses and individuals.

Trolling Effects is a resource for those who have been targeted by patent trolls. Here you can learn more about these bad actors, search through and submit demand letters, and find out how we can fix our broken patent system.

Trolling Effects is a project of the Electronic Frontier Foundation, with support from the following partners:

Research partners:

Special thanks to Mirabot Technology Cooperative for building and designing the website.

Contact us

Demand letter information or changes: demands@trollingeffects.org

Generic questions, press inquiries, news, partnership information, etc.: team@trollingeffects.org

Website inquiries: webmaster@trollingeffects.org

Legal inquiries: info@eff.org