In the Steve Jobs biography by Walter Isaacson, Jobs vowed to remove the copycat from the market, apparently even from the great beyond.

FORBES: Apple Delivers Crushing Blow to Google in Patent Dispute; Ghost of Steve Jobs?

As noted by MacRumors, Walter Isaacson's 2011 biography of Steve Jobs made reference to Jobs' anger at Palm over the hiring of Apple employees, but did not discuss Jobs' threat of patent litigation.

CNN: STORY HIGHLIGHTS