Corp X has a patent with a book value of $4,000. Before its pending litigation, the company assumed a 3-year useful life of this patent with annual cash inflows of $3,000. After a judge awarded the company a decision defending its patent, the company's new expectations increased the useful life of the patent to 5 years, its cash flow to $4,000 a year.

Please provide the accounting issues and how the company should account for this?