ANSWER IN YOU OWN WORDS!

Part a and b are scenarios that are part of the same question.

Dont forget to provide references.

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13. Determining the useful life of an intangible asset should generally be based on the lesser of managements estimate of the period of time over which it is expected to produce benefits (such as cash flows), legal, regulatory, or market-related factors (obsolescence, competition, etc.) that may limit its useful life. What useful life would you estimate for the following intangible assets?

a. An acquired customer list. A direct-mail marketing company acquired the customer list and expects that it will be able to derive benefit from the information on the acquired customer list for at least one year but for no more than three years.

b. An acquired Patent that expires in 15 years. The product protected by the patented technology is expected to be a source of cash flows for at least 15 years. The reporting entity has a commitment from a third party to purchase that Patent in 5 years for 60 percent of the fair value of the Patent at the date it was acquired, and the entity intends to sell the Patent in 5 years.