At the risk of getting down voted by folks not in the know, Adwords was also such an infringement (just done much much better) of an Overture patent [1] that if it hadn't been for Yahoo buying up Overture and later settling the lawsuit, our views on Google's success might be very different today.
In July 2005, Google acquired Android Inc. for at least $50 million, whose key employees, including Rubin, Miner and White, stayed at the company after the acquisition.
Please ignore the folks who were snarky and downvoted you.
Folks like to think this was really an acquisition, but they are mostly wrong :)
In particular, Google basically acquired some people. Anyone who thinks they had a real OS at that point, and anything that approached even the first version of android, is smoking something.
Source: I did diligence on the acquisition, and I watched them develop android at Google.
A question that can be answered by pasting it into a search engine is very unlikely to provoke an insightful discussion, and is not good use of HN real estate.
