Copyright law usually imposes certain restrictions on the rights of copyright owners to balance the partial interests of the copyright owners and the overall interests of society. The main restrictions on software copyright in my country are:
(1) Time limit: The protection period of software developers’ developer identity rights is not limited. The protection period for other rights of software copyright is 25 years, ending on December 31 of the 25th year after the software is first published. Before the expiration of the protection period, the software copyright owner can apply to the software registration authority for an extension of 25 years, but the protection period is the longest No more than 50 years. When the copyright owner is legally changed due to legal actions such as inheritance or unit division or merger, the protection period of the corresponding software copyright will not be changed. When relevant rights are transferred due to the signing of a right-to-use or use-right licensing contract in accordance with the law, the occurrence of the transfer activity does not change the protection period of the relevant software copyright. When the unit that owns the software copyright terminates or the citizen who owns the software copyright dies without a legal successor, except for the developer's identity rights, all other rights related to the software enter the public domain before the expiration of the protection period.
(2) During the protection period, small amounts of software may be copied for non-commercial purposes such as classroom teaching, scientific research, and the performance of official duties by state agencies. No remuneration will be paid to the software copyright owner with his consent.
(3) Software copyright owners shall not harm public interests or violate other laws.
(4) The legal holder of a software copy may, without the consent of the software copyright holder, install the software into the computer according to the needs of use. Within, make a backup copy, make necessary modifications, etc.
