Viewing Tweets won't unblock @SarahBarthel. 1  Sarah BarthelâVerified account @SarahBarthel 17 Oct 2016. 2  Sarah BarthelâVerified account @SarahBarthel 7 Oct 2016. 3  Sarah Barthel Retweeted.  Sarah Barthel 1  Retweeted. Sarah BarthelâVerified account @SarahBarthel 1 Aug 2016.  Sarah BarthelâVerified account @SarahBarthel 29 Jul 2016.
Amortization of Intangible Assets. To illustrate the amortization of an intangible asset, imagine XYZ Biotech spends $30 million dollars on a patent with a useful life of 15 years. Theoretically, to account for the expense over a 15-year period, XYZ Biotech records $2 million each year as an amortization expense.
There are maintenance fees to be paid during the life of a utility patent, and if they are not paid on time the patent will expire earlier than the maximum 20-year-from-filing term. After the patent expires, the invention is available to all. Design Patents are valid for a period of 14 years from the date of issue.