Please help me understand why there is no amortization necessary for situation 6. I would think that there would be something recorded because there is economic benefit for 6 years. Thanks!

The following transactions involving intangible assets of Minton Corporation occurred on or near December 31, 2014 1. Minton paid Grand Company $500,000 for the exclusive right to market a particular product, using the Grand name and logo in promotional material. The franchise runs for as long as Minton is in business. Minton spent $600,000 developing a new manufacturing process. It has applied for a patent, and it believes that its application will be successful In January, 2015, Minton's application or a patent manufacturing process will be useful to Minton for 10 years. 2. 3. #2 above was granted. Legal and registration costs incurred were $18 O O The patent runs r20 years. The 4. Minton incurred $140,000 in successfully defending one of its patents in an infringement suit. The patent expires during December, 2018. 5. Minton incurred $480,000 in an unsuccessful patent defense. As a result of the adverse verdict, the patent, with a remaining unamortized cost of $252,000,is deemed worthless Minton paid Sneed Laboratories $104,000 for research and development work performed by Sneed under contract for Minton. The benefits are expected to last six years. 6. Prepare journal entry (ies) for on December 31, 2015 to record any resultant amortization. (Credit account titles are automatically indented when the amount is