After the invalid request examination procedure, the scope of patent protection may be reduced, thus affecting its value. Option b is incorrect. If a patent has valid foreign licensing contracts, these valid foreign licensing contracts will have a positive or negative impact on the value of patent assets, and option C is incorrect. If the content of patent claims broadens the scope of rights protection and there are no unnecessary technical features, obtaining evidence of infringing products will increase the value of patents, and option D is incorrect.