Google has intervened in an ongoing intellectual property dispute between smartphone application developers and a patent-holding firm, Wired.com has learned, marking the Mountain View company’s first public move to defend Android coders from a patent troll lawsuit that’s cast a pall on the community.

The company says it filed a request with the United States Patent and Trademark office Friday for reexamination of two patents asserted by East Texas-based patent firm Lodsys. Google’s request calls for the USPTO to assess whether or not the patents’ claims are valid.

“We’ve asked the US Patent Off...