RPX Corporation

RPX Corporation

RPX Corporation launched in 2008 under CEO John Amster, who previously held executive roles at patent licensing firms. The company operates as a defensive patent aggregator, funded by subscription fees from technology companies like Google, Amazon, and Microsoft. It targets the market failure where patent assertion entities (PAEs) acquire patents solely to litigate against operating firms. RPX acquires patents from the secondary market, pre-litigation, to retire them from PAE use. Its strategy spans direct patent purchases, licensing programs, and syndicated acquisitions. The firm has completed over 200 transactions, including the acquisition of the Unwired Planet patent portfolio in 2012 for $56 million. It operates primarily in the United States and Europe. The firm manages a portfolio of more than 15,000 patent assets. It employs a subscription model that aligns costs with client revenue, making it distinct from traditional IP licensing. No additional offices or adjacent vehicles are publicly confirmed. In 2022, RPX acquired the patent risk management assets of allied firm IP Navigator (per public filings, 2022). RPX invented a subscription-based, risk-pooling model for patent defense, converting a litigious zero-sum market into an insurance-like utility. Its governance is that of a public company (NASDAQ: RPXC), making its financials and portfolio transparent by statute. This structural transparency is a deliberate differentiator from opaque patent aggregators.