RPX Corporation -- which bills itself as a defensive patent aggregator and aims to neutralize patent trolls by buying up patents and licensing them to clients for an annual subscription fee -- ...

Cascades Ventures Inc.--a descendant of the "original patent troll"--may have reached the end of its campaign against the self-described troll-fighter RPX Corporation and a quintet of tech companies ...

Cisco and IBM have signed up as among the first members of start-up RPX Corp., established to protect members against litigation from so-called patent trolls – a derogatory term for companies that ...

RPX Corp., a startup firm that is buying various patent portfolios, including those involving radio frequency identification, in order to help high-tech companies fight patent assertions and ...

According to the Wall Street Journal, RPX’s IPO was considered “the best of a batch of deals expected [last] week in the states”. RPX offers perpetual licences to all of the patents in the company's ...