Intellectual Property
May 3, 2011
Derided as Trolls, Patent Holding Companies Step Into the Light
This week's planned initial public offering by San Francisco-based RPX Corp., which acquires patents for defensive purposes, will shine a new spotlight on patent holding companies that usually stay in the shadows.




Daily Journal Staff Writer
PALO ALTO - A planned initial public offering this week of RPX Corp., a San Francisco company that acquires patents for technology company clients so they can defend against infringement lawsuits, is shaping up to be something of a coming-out party for the business model.
Patent holding companies, which didn't exist just a few years ago and have since kept a low profile, are stepping into the li...
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