Answer:
patent 30,400 debit
 cash 30,400 credit
--to record the succesfully defense of the patent--
amortization expense 8,650 debit
 patent 8,650 credit
--to record depreicationon patent--
Step-by-step explanation:
At January 2022 we successfully defend the patent we can capitalized this in the patent account instead of posting an expense account.
We will also extend the useful life thus we should recalcualtethe amortization for the year ended December 31th, 2022
38,400 + 30,400 = 69,200
This patent is estimated to last until 2029 thus, 8 years:
69,200 / 8 = 8,650
We are going to amortizate the patent at this rate per year.