The U.S. Patent and Trademark Office has unveiled a sweeping 41-page decision finding that Salesforce.com was a real party in interest when defensive patent aggregator RPX Corp. challenged the validity of two patents asserted against it.

The upshot is that RPX will not be able to challenge the patents under the American Invents Act, because Salesforce was beyond the statute of limitations for seeking administrative review under the AIA. A patent infringement suit against Salesforce that’s been on hold for several years will now move forward.