Answer:
The carrying amount of $270,000 is greater than fair value $125,000.
To measure the impairment loss, just do:
= Carrying Value - Fair Value
= $270,000 - $125,000
= $145,000
Therefore, the journal entry is as follows:
Loss on impairment A/c Dr. $145,000
To Patent $145,000
(To record the loss on impairment)