2. On the premise of owning the basic patent, you can apply for a subordinate patent after improvement, and whether to apply depends on the wishes of the inventor.
3. It can be licensed to multiple licensees in the form of general license.
The duration of the license depends on the contract signed by the patentee and the licensee. However, it shall not exceed the term of the patent right.
5. The level of patent license fee depends on the technical value of the patent and the contract signed between the patentee and the licensee. As long as the licensee is willing to sign the contract, it is legal to get 654.38+0 billion. . . .