Note 2 – Intangible Assets

Intangible assets at June 30, 2019 and December 31, 2018 consisted of the following:

Amortization expense was $397,664 and $222,559 for the six months ended June 30, 2019 and 2018, respectively, and is included within research and development expense in the accompanying condensed consolidated statements of operations. Our estimated amortization expense for the next two years will be approximately $795,000 per year and for annual periods thereafter approximately $788,000 per year.

The capitalized costs for the license rights to PCS-499 included the $8 million purchase price, $1,782 in transaction costs and $3,037,147 associated with the initial recognition of an offsetting deferred tax liability related to the acquired temporary difference for an asset purchased that is not a business combination and has a tax basis of $1,782 in accordance with ASC 740-10-25-51 Income Taxes. In accordance with ASC Topic 730, Research and Development, we capitalized the costs of acquiring the exclusive license rights to PCS-499, as the exclusive license rights represent intangible assets to be used in research and development activities that management believes has future alternative uses.