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Referencing Chris McCarty's points:
On the surface level, patents such as the one referenced in the NYTimes
article *do* appear to be easily challenged. However, the process of
overturning a patent is unfortunately not so simple as informing the US
Patent and Trademark office of its errors.
Patent challenges often involve extended legal battles, and until such time
as somebody decides it's financially viable to undertake such a task, the
patent holders have a legal "club" to use on everyone else... Including
network researchers who have been working in the field for decades. How
many "electronic community" research projects have we undertaken that may
technically violate one or more of that patent's claims?!?
An ounce of prevention, so to speak...
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