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Since the inception of the search engine, trademark owners, advertisers, search engine providers, and the courts have struggled with the issue of the use of third-party trademarks in keyword advertising and search returns, and whether such trademark use is likely to confuse consumers when they are searching for information regarding a particular brand. Despite an array of holdings on this issue over the years, following the 2011 decision in Network Automation, Inc. v. Advanced System Concepts, Inc., the Ninth Circuit and other courts have generally held that the potential for “mere diversion” of a consumer caused by the use of a third party’s trademark in connection with sponsored keywords or search results does not constitute trademark infringement unless a trademark owner can demonstrate that particular search returns or sponsored keyword advertisements are likely to cause confusion based on the specific use or presentation of a trademark in a search return.