Intellectual property protection has a time limit, for example, the protection period of invention patents is 20 years, and the protection period of utility models and designs is 10 years, counting from the date of application. Expires automatically and becomes a public technology. If the term of validity is not stipulated in the contract, the term of validity of the contract is the patent right term by default.
Where a company shares in patented technology, the patent becomes the company's property and the ownership belongs to the company after the value evaluation and the shareholding procedures.