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RPX

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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.

Milestones

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• 
  RPX received in Series B funding. (7/22/09)
  Posted 7/24/09 at 9:34am
• 
  RPX received in Series A funding. (9/17/08)
  Posted 11/24/08 at 7:12am via rpxcorp.com
• 
  RPX — Patent Risk Advisory Firm RPX Files For An IPO (1/25/11)
  Posted 1/24/11 at 6:46pm via techcrunch.com

Videos

Screenshots

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Traffic Analytics

Compete

Sources

1. Press release (rpxcorp.com) [edit]
2. Index Ventures Joins Kleiner Perkins and Charles River in RPX Series B [edit]
3. Patent Risk Advisory Firm RPX Files For An IPO (techcrunch.com) [edit]