Apple's suit alleged 20 separate patent infringements relating to the iPhone's user interface, underlying architecture and hardware. Steve Jobs exclaimed "We can sit by and watch competitors steal our patented inventions, or we can do something about it" The ITC rejected all but one of Apple's claims
> July 2008 Apple Inc. vs Psystar Corporation
Apple Inc. filed suit against Psystar Corporation alleging Psystar sold Intel-based systems with Mac OS X pre-installed and that, in so doing, violated Apple's copyright and trademark rights and the software licensing terms of Apple's shrink wrap license.
>2019, Apple v. Corellium
Apple sued security start-up Corellium for creating the first virtual iPhone-simulating software. The product was created with the intent of helping users research security issues in iOS. Apple's lawsuit argued that Corellium's product would be dangerous in the wrong hands as it would let hackers learn exploits easier, as well as claiming that Corellium was selling their product indiscriminately, even to potential competitors of Apple.
> Apple v. Samsung: Android phones and tablets
By August 2011, Apple and Samsung were engaged in 19 ongoing lawsuits in 12 courts in nine countries on four continents; by October, the fight expanded to 10 countries.
Do you have examples where apple has aggressively used patents offensively like this?