"We’re also looking at other ways to reduce the anti-competitive threats against Android by strengthening our own patent portfolio."
I think you misunderstood the last paragraph. They want to challenge competition by innovation not by a patent war. Google's patent portfolio is there to protect them against unfair competition.
"Patents were meant to encourage innovation, but lately they are being used as a weapon to stop it."
In tech, innovation and copying are two sides of the same coin. It's really hard to build something better than what's on the market if you're not allowed to start from what's already there.
I think you misunderstood the last paragraph. They want to challenge competition by innovation not by a patent war. Google's patent portfolio is there to protect them against unfair competition.
"Patents were meant to encourage innovation, but lately they are being used as a weapon to stop it."