Court Denies Mailblocks' Injunction Request

from the keep-on-challenging dept

Mailblocks’ first attempt at enforcing their patents on “challenge-response” anti-spam techniques has hit a roadblock. A judge has denied their injunction request against SpamArrest – a company offering just such a challenge response system (though, they’re also known for spamming their own users’ contacts). The interesting thing here is that SpamArrest admitted to the judge that they were in violation of the patents, and still didn’t have to stop. Instead, they said that they believed the patents were invalid, based on prior-art, and the judge agreed that there were “substantial questions” around whether or not Mailblocks could win a patent infringement suit.

Add Your Comment

Your email address will not be published. Required fields are marked *

Have a Techdirt Account? Sign in now. Want one? Register here

Comment Options:

Make this the or (get credits or sign in to see balance) what's this?

What's this?

Techdirt community members with Techdirt Credits can spotlight a comment as either the "First Word" or "Last Word" on a particular comment thread. Credits can be purchased at the Techdirt Insider Shop »

Follow Techdirt

Techdirt Daily Newsletter

Techdirt Deals
Techdirt Insider Discord
The latest chatter on the Techdirt Insider Discord channel...