Update, June 24 2016 We have confirmed that Comodo submitted Requests for Express Abandonment for all three trademark registration applications in question. We’re happy to see this positive step towards resolution, and will continue to monitor the requests as they make their way through the system. We’d like to thank our community for their support.

Some months ago, it came to our attention that Comodo Group, Inc., is attempting to register at least three trademarks for the term “Let’s Encrypt,” for a variety of CA-related services [1][2][3]. These trademark applications were filed long after the Internet Security Research Group (ISRG) started using the name Let’s Encrypt publicly in November of 2014, and despite the fact Comodo’s “intent to use” trademark filings acknowledge that it has never used “Let’s Encrypt” as a brand.

We’ve forged relationships with millions of websites and users under the name Let’s Encrypt, furthering our mission to make encryption free, easy, and accessible to everyone. We’ve also worked hard to build our unique identity within the community and to make that identity a reliable indicator of quality. We take it very seriously when we see the potential for our users to be confused, or worse, the potential for a third party to damage the trust our users have placed in us by intentionally creating such confusion. By attempting to register trademarks for our name, Comodo is actively attempting to do just that.

Since March of 2016 we have repeatedly asked Comodo to abandon their “Let’s Encrypt” applications, directly and through our attorneys, but they have refused to do so. We are clearly the first and senior user of “Let’s Encrypt” in relation to Internet security, including SSL/TLS certificates – both in terms of length of use and in terms of the widespread public association of that brand with our organization.

If necessary, we will vigorously defend the Let’s Encrypt brand we’ve worked so hard to build. That said, our organization has limited resources and a protracted dispute with Comodo regarding its improper registration of our trademarks would significantly and unnecessarily distract both organizations from the core mission they should share: creating a more secure and privacy-respecting Web. We urge Comodo to do the right thing and abandon its “Let’s Encrypt” trademark applications so we can focus all of our energy on improving the Web.

[1] “Let’s Encrypt” Trademark Registration Application

[2] “Let’s Encrypt With Comodo” Trademark Registration Application

[3] “Comodo Let’s Encrypt” Trademark Registration Application