Two more Android device makers, Acer and ViewSonic, have signed patent agreements with Microsoft covering Android, falling in line with the Redmond company’s claims that Google’s mobile operating system violates its patented technologies.

In news releases, Microsoft executive Horacio Gutierrez called the deals “an example of how industry leaders can reach commercially reasonable arrangements that address intellectual property.”

Meanwhile, HTC is using nine patents newly acquired from Google to fend off Apple’s patent claims over HTC’s use of Android, according to a Bloomberg News report this morning.

The deals are the latest moves by the companies in the ongoing battle over Android. Google’s top lawyer recently spoke out against what the company calls “a hostile, organized campaign against Android by Microsoft, Oracle, Apple and other companies, waged through bogus patents.”

Microsoft is reportedly making $5 on every Android sold by HTC  under a patent licensing deal, and asking for between $7.50 and $12.50 in negotiations with makers of other Android devices.

Like what you're reading? Subscribe to GeekWire's free newsletters to catch every headline

Job Listings on GeekWork

Find more jobs on GeekWork. Employers, post a job here.