I'm no attorney, but here it is:
35 U.S.C. 271 Infringement of patent.
(a) Except as otherwise provided in this title, whoever without authority makes, uses, offers to sell, or sells any patented invention, within the United States, or imports into the United States any patented invention during the term of the patent therefor, infringes the patent.
(b) Whoever actively induces infringement of a patent shall be liable as an infringer.
(g)...A product which is made by a patented process will, for purposes of this title, not be considered to be so made after -
(1) it is materially changed by subsequent processes
Now, does Captain Paranoia's adaptation apply to the G1 provision of US patent law? I don't know. Maybe----but then, maybe not.
Still, the cone is a basic shape long held within the public domain. Morally, regardless of legal wrangling, is it right to use Trail Design's idea of a cone with bottom and top vents as both a pot support and windscreen? Does the fact that a high school student could recreate a similar cone change the issue or not?
(All quotes taken from http://www.uspto.gov/web/offices/pac/mpep/documents/appxl_35_U_S_C_271.htm)
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