Preliminary Ruling Against Mailblocks

from the that's-good dept

Not sure why this didn’t get any news coverage, but someone over on Dave Farber’s IP mailing list says that Mailblocks, the anti-spam company that has based their entire business model on their collection of “challenge-response” patents, may not have them for very long. The company, which was very quick to file patent infringement lawsuits against Earthlink and SpamArrest, was denied an injunction shutting down SpamArrest because the judge felt that the patents were invalid. He believes that the technology was obvious when the patents were issued. A final decision is still a ways away, but this is a good sign.

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