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Patent legal expenses

I was granted a patent in 2019. Are the legal expenses deductible that were paid in 2017, 2018 and 2019 deductible or are only the legal expenses paid in 2019 deductible? I have TurboTax premier and where would I enter the information?

3 Replies
Expert Alumni

Patent legal expenses

You would deduct the expense in the year the expense was incurred, provide the expense was a business expense.  

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Level 1

Patent legal expenses

What if the patent is not part of a business yet? It was designed and paid for due to a hobby.

Level 15

Patent legal expenses

It was designed and paid for due to a hobby.

It is my understanding that hobby expenses are not deductible. So I would interpret that to mean your legal expenses related to that patent (since it is/was a hobby) are not deductible either.


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