EBay has reached a settlement with MercExchange that gives the online auction company the rights to the "Buy It Now" patent that sparked a precedent-setting Supreme Court case, spurred a call for patent reform, and shifted the leverage in patent battles. The MercExchange case was closely watched in Silicon Valley because tech companies often incorporate hundreds or even thousands of patents in products - and sometimes unknowingly infringe them. The Supreme Court ruled unanimously in 2006 that patent-holders are entitled to damages but cannot count on automatic injunctions that halt a company's manufacturing or business.
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