PRESS RELEASE (Aug. 31, 2010) - TASER International Wins Judgment and Final Injunction in Patent Infringement Against Stinger Systems, Inc. - U.S. District Court Issues Final Injunction Against Stinger S-200
In other words, Taser International owns the exclusive rights to the sometimes-deadly, often-unreliable, taser waveform as used in the X26 taser.
This is the waveform that includes the DC pulse after the arc phase. A DC pulse that creates (is) more-dangerous low frequency and more-dangerous continuous 100% duty cycle.
It's worth noting that Stinger Systems reportedly used 75% less output than the X26 taser, and they reportedly made no false promises of safety.
If this randomly-deadly waveform represents the "Intellectual Property" of Taser International, then that's a reflection of the people that run the outfit.