CNG Financial v. Google, 06CV 040 (S.D. Ohio). Financial company sues over sale of CASH N’ GO as keyword, alleging direct and indirect infringement. hat tip BNA Internet Law News.

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Whether an ad appearing alongside organic search results for a search consisting of a trademark, creates a likelihood of confusion with that trademark, may depend in part on the user’s ability to distinguish what on the search results page is an organic result and what is a paid result.
Publicly available research in the topic