For years, Yelp has complained about Google’s practices, alleging that the tech giant placed its own products above competitors in Google search results. Yelp says when a customer searches, say, for “restaurants in Brooklyn,” Google prioritizes putting its own summary and ratings above non-sponsored results from rivals including Yelp, resulting in fewer customer visits and ad revenue for its business. The San Francisco company that crowd-sources customer reviews is now taking its complaints to court in a closely watched federal lawsuit that is causing waves in Silicon Valley. In a lawsuit file…