Accounting treatment of patent rights exclusively used for product production: the service life of patent rights should be reviewed at least at the end of each year. The amortization method of patent right shall be reviewed at least once at the end of each year. The patent right shall be subsequently measured according to the cost minus the accumulated amortization and impairment reserve.
Borrow: intangible assets-patent right,
Loans: accounts payable, etc.
At the time of amortization,
Borrow: production cost-amortization of intangible assets,
Loan: accumulated amortization.