What is patent licensing? How many forms are there?

What is patent licensing? How many forms are there? Patent license; ; Apart from application, there are two ways to obtain general licensing patents: patent transfer and patent licensing. Patent licensing is usually achieved by signing a patent licensing contract, which means that the patentee allows the licensee to use the patent in a certain way in a certain area and within a certain period of time. Patent license can be divided into five forms: exclusive license, exclusive license, general license, subordinate license and cross license. Patent license; Patent license; ; Exclusive license Exclusive license means that the licensee has the exclusive right to use the licensor's patent within the specified period and area, that is, the licensee is the only licensee of the patent, and neither the licensor nor any third party may use the patent within the specified period and area. Exclusive license means: (1) The licensee completely enjoys the right to use inventions to create patents in a certain area and within a certain period of time, and obtains the exclusive right to obtain patent benefits. If the term of an exclusive license contract is equal to the term of validity of a patent, it is essentially similar to a patent transfer contract. (2) Not only the patentee cannot transfer the right to use the invention-creation patent to a third person, but even the patentee himself cannot use the patent. Patent license; ; Exclusive license Exclusive license means that the licensor will not sign a license contract with a third party for the patented technology except allowing the licensee to use the patented technology within the specified period and area, but the licensor still has the right to use the patented technology. Exclusive license means: (1) The licensee can enjoy the right to exploit the invention and create a patent within the conditions and scope stipulated in the contract and obtain exclusive rights. This kind of license can only license the licensee's exclusive right to use in a certain area, but cannot license others to exploit the patent. (2) The patentee still reserves the right to use the patent. In fact, this license excludes anyone except the licensee and the patentee from using the patent within the scope stipulated in the contract.