Restrictive business practices limiting challenges to validity

Nature 
Requiring the acquiring party to refrain from challenging the validity of patents and other type of protection for inventions involved in the transfer or the validity of other such grants claimed or obtained by the supplying party, recognizing that any issue concerning the mutual rights and obligations of the parties following such a challenge will be determined by the appropriate applicable law and the terms of agreement to the extent consistent with that law.
Type 
(F) Fuzzy exceptional problems