Legal analysis: Patent license includes exclusive license, exclusive license and sub-license. Exclusive license means that the patentee permits the licensee to exclusively exploit the patent in the way agreed in the contract within the time and geographical scope agreed in the contract. At the same time, not only the patentee can no longer license a third person to exploit the patent in the same way, but also the patentee himself can not exploit it.
Legal basis: Article 60 of the Patent Law of People's Republic of China (PRC), if a patent is exploited without the permission of the patentee, that is, the patent right is infringed and a dispute arises, it shall be settled by the parties through consultation; Unwilling to negotiate or failing to do so, the patentee or interested party may bring a suit in a people's court or request the administrative department for patent affairs to handle it.