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

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. [1] https://www.google.com/patents/US6269361 https://www.google.com/patents/US6269361