Sandhill Company from time to time embarks on a research program when a special project seems to offer possibilities. In 2016, the company expends $324,500 on a research project, but by the end of 2016 it is impossible to determine whether any benefit will be derived from it. In 2018, the company successfully defends the patent in extended litigation at a cost of $47,200, thereby extending the patent life to December 31, 2025. What is the proper way to account for this cost? Also, record patent amortization (full year) in 2018.