Since the infringement was software, specifically the Time Warp patent, by loading the new software and rebooting the dvr the dvr functionality based on that patent is disabled and will be well past the expiration of that patent. No hardware was found to be infringing any patents so to require the hardware to be turned off that is not running infringing software is bullish by Tivo but not defensible.
In Polaroid vs Kodak, the chemical process for instant photos was what infringed 7 of Polaroid's patents and Kodak could have easily changed the chemical and layers process (software) to continue in the instant camera business with the existing instant cameras (hardware). They decided not to and shut it all down in favor of their new disc cameras.
A patent is not a perfect protection against imitation. It only grants the patentholder the right to sue intruders once they have been identified. This implies that the patentholder must supervise the market and react in case of infringement. The reaction may be to go to court, to settle an agreement or to accept the entry. Xerox has a portfolio full of patents that have been infringed but for the most part did not choose to pursue the infringements.
In Polaroid vs Kodak, the chemical process for instant photos was what infringed 7 of Polaroid's patents and Kodak could have easily changed the chemical and layers process (software) to continue in the instant camera business with the existing instant cameras (hardware). They decided not to and shut it all down in favor of their new disc cameras.
A patent is not a perfect protection against imitation. It only grants the patentholder the right to sue intruders once they have been identified. This implies that the patentholder must supervise the market and react in case of infringement. The reaction may be to go to court, to settle an agreement or to accept the entry. Xerox has a portfolio full of patents that have been infringed but for the most part did not choose to pursue the infringements.