| Website | rpxcorp.com |
| Category | Legal |
| Employees | |
| Description | Patent Business |
| Series A, 9/08 Kleiner Perkins Caufield & Byers Charles River Ventures | |
| Series B, 7/09 Index Ventures Charles River Ventures Kleiner Perkins Caufield & Byers |
RPX (Rational Patent) is a “defensive patent aggregator.” It buys patents that might otherwise end up in the hands of patent trolls and keeps them out of litigation for its corporate members, who pay between $35,000 and $4.9 million for a perpetual license to the patents in RPX’s portfolio.
