Many, many:
Any of the following circumstances will not be regarded as infringement of patent rights:
(1) Patented products or products directly obtained according to patented methods After the product is sold by the patentee or an entity or individual licensed by it, the product is used, promised to be sold, sold or imported;
(2) The same product has been manufactured and used before the patent application date. The same method or the necessary preparations for manufacture and use have been made, and the manufacture and use will only continue within the original scope;
(3) Foreign means of transportation that temporarily pass through China’s territorial land, territorial waters, and airspace, In accordance with the agreement signed between the country to which it belongs and China or the international treaty to which China is a party, or in accordance with the principle of reciprocity, the relevant patents are used in the devices and equipment of the transportation vehicle for its own needs;
(IV) ) Use relevant patents exclusively for scientific research and experiments;
(5) To provide information required for administrative examination and approval, manufacture, use, import patented drugs or patented medical devices, and manufacture specifically for them , Importing patented drugs or patented medical devices.
Compulsory license
Cannot be transferred to foreigners arbitrarily
National defense and confidentiality patents must not be made public
The implementation and review conditions of national defense patents are strict