Answer: C
(1) Option AD: Before the expiration of the patent right, the patent logo shall be marked on the patented product, the product directly obtained according to the patented method or its packaging in accordance with the law. Promising to sell or sell the product after termination does not constitute patent counterfeiting. (2) Option BC: Infringement of patent rights includes "acts of implementing the patent for production and business purposes without the permission of the patentee" and counterfeiting patents; Option B is an infringement of patent rights, but does not constitute patent counterfeiting; Option C is an act of patent counterfeiting in the context of patent infringement.