The possession of Real Right in Civil law is based on three conditions : the asymmetric information of real right , the importance of exempt of legal risk in trade and the physical control over specific res . It is generally believed that there is no possession right in intellectual property due to the absence of physical controllability of the information product , which acts as the object of intellectual property right . Until registered , the creation , alternation , alienation or termination of intellectual property right shall come into effect . But that rule is not absolutely applicable anywhere . In some cases , such as copyright law , there is no compulsory requirement of registration when acquiring copyright . In such cases , the holder of information product can take measures to prevent the leakage of information , which functions just like the possession of Real Right to keep others away from the object . To safeguard the trade security , the common opinion of no possession right in intellectual property shall be challenged . There still exists room for the possession right protection in intellectual property , such as permission of the assignee in good faith to obtain ownership of intellectual property right from a person unauthorized to dispose .