RPX Corporation, which acquires and licenses patent assets to clients to reduce their risk of patent litigation, raised a larger-than-expected $160 million by pricing 8.43 million shares at $19 apiece. RPX had originally planned to sell 7.3 million shares at $16 to $18 per share, resulting in $124 million in proceeds at the original midpoint. San Francisco, CA-based RPX Corporation, which was founded in 2008 and booked $95 million in sales in 2010, is expected to begin trading on Wednesday on the NASDAQ under the symbol RPXC. Goldman, Sachs & Co. and Barclays Capital acted as lead underwriters on the deal.