[dublo7]

Google's army of lawyers and cash reserves keeps patent trolls away. Pt try to go after little and medium companies who don't have the time or resources to fight back. It's way cheaper to write a check and make the problem go away, rather than fight via expensive lawyers or getting audited before the shakedown.

[the_jeremy]

One would assume this to also be the case for apple. I definitely would not call them a "medium" company.

[icco]

Apple has larger cash reserves than Google. Also Google has spent years buying companies for their patent portfolios to help prevent patent trolls. But also many tech companies are joining groups like LOT Net to help stop this as well.

This is just defense in depth.