# Cloudflare Says Patent Fight With Sable Ended in a Public-Domain Patent Surrender
*Event date: 2024-10-03*
By IO Digest Desk
Cloudflare used an October 3, 2024 update to declare victory in one of its most visible anti-patent-troll campaigns, saying litigation with Sable IP and Sable Networks has concluded on terms that include payment to Cloudflare and the dedication of Sable’s patents to the public. If the account in Cloudflare’s evidence-backed post holds, the result goes beyond a courtroom win. It represents an attempt to change the economics of patent assertion by making the fight itself more dangerous for non-practicing entities.
The dispute began in March 2021, when Sable sued Cloudflare over a patent portfolio acquired from the defunct router company Caspian Networks. Cloudflare’s description of Sable is blunt: a shell entity built to monetize old patents rather than make or sell products. The suit also reached other networking and security companies, but Cloudflare says several of those defendants resolved their cases out of court while it chose to keep fighting.
According to the company, Sable started with roughly 100 claims from four patents and tried to apply old hardware-router technologies to Cloudflare’s cloud-delivered, software-defined services. Cloudflare argues that those infringement theories stretched the patents far beyond their original technical context. Rather than treat the case as an isolated cost of doing business, the company turned it into another round of Project Jengo, its public prior-art contest meant to uncover evidence that can invalidate an accuser’s patents.
That tactic matters because it tries to reverse a familiar asymmetry. Patent trolls often rely on the high cost of litigation to pressure settlements even when the legal and technical case is weak. Project Jengo aims to raise the counter-risk by mobilizing outside researchers to attack the entire portfolio, not just the claims asserted in one complaint. Cloudflare says it has paid out more than $125,000 through the project since launching it in 2017 and used the Sable round to keep searching for prior art across all of Sable’s patents.
The company says years of district-court and Patent Office fights reduced Sable’s case to a single claim from a single patent by the time the parties reached a five-day jury trial in Waco, Texas, in February 2024. Cloudflare’s telling is that Sable tried to map decades-old router ideas onto modern cloud architecture and failed to persuade the jury. The October update describes that trial result as part of a broader collapse of the assertion campaign, saying Cloudflare had already knocked out about 99 percent of Sable’s original claims before trial.
What makes the October announcement more notable than an ordinary defense win is the stated endgame. Cloudflare says the final terms require Sable not only to pay Cloudflare but also to dedicate all its patents to the public. That means the portfolio used as leverage in the lawsuit can no longer be deployed the same way against other targets. From Cloudflare’s perspective, that is the strongest possible signal to future accusers: sue us on weak patents and you may lose the assets you planned to monetize.
There is still a degree of self-interest in the campaign. Cloudflare is publicizing a legal strategy that also reinforces its brand as a combative defender of the open internet. But even with that caveat, the evidence supports a concrete outcome. This was not merely a settlement that made a case disappear. Cloudflare is presenting it as a rare example of a defendant pushing through trial and emerging with terms intended to reduce future patent-troll leverage across the broader market.
