Michael Kwun, left, and Alex Macgillivray, two of Google’s lawyers, are working to establish a body of legal interpretation that favors the company.Credit...Jessica Brandi Lifland for The New York Times SAN FRANCISCO, Oct. 19 — Google attracts millions of Web users every day. And, increasingly, it’s attracting the attention of plenty of lawyers, too. As Google has grown into the world’s most popul