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Licensed rights and other intangible assets | 9 Months Ended
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Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Licensed rights and other intangible assets | 5. Licensed rights and other intangible assets The following provides information about our license rights and other intangible assets, net as of September 30, 2023 and December 31, 2022 (in thousands):
|  | September 30, 2023 |  |  | December 31, 2022 |
|  | Gross Carrrying Amount |  |  | Accumulated Amortization |  |  | Net |  |  | Gross Carrrying Amount |  |  | Accumulated Amortization |  |  | Net |
Intangible assets subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hormone therapy drug patents |  | $ | 6,224 |  |  | $ | 1,824 |  |  | $ | 4,400 |  |  | $ | 6,225 |  |  | $ | 1,598 |  |  | $ | 4,627 |
Hormone therapy drug patents applied and pending approval |  |  | 1,936 |  |  |  | — |  |  |  | 1,936 |  |  |  | 1,995 |  |  |  | — |  |  |  | 1,995 |
Intangible assets subject to amortization |  |  | 8,160 |  |  |  | 1,824 |  |  |  | 6,336 |  |  |  | 8,220 |  |  |  | 1,598 |  |  |  | 6,622 |
Intangible assets not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trademarks/trade name rights |  |  | 321 |  |  |  | — |  |  |  | 321 |  |  |  | 321 |  |  |  | — |  |  |  | 321 |
License rights and other intangible assets, net |  | $ | 8,481 |  |  | $ | 1,824 |  |  | $ | 6,657 |  |  | $ | 8,541 |  |  | $ | 1,598 |  |  | $ | 6,943 |
We recorded, in continuing operations, amortization expense related to patents of $0.1 million and $0.1 million for the three months ended September 30, 2023 and 2022 , respectively, and amortization expense related to patents of $0.2 million and $0.4 million for the nine months ended September 30, 2023 and 2022 , respectively. Our intangible assets subject to amortization are expected to be amortized as follows (in thousands):
Year ending December 31, |
2023 |  | $ | 110 |
2024 |  |  | 439 |
2025 |  |  | 438 |
2026 |  |  | 438 |
2027 |  |  | 438 |
Thereafter |  |  | 2,537 |
Total |  | $ | 4,400 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//350-30/tableOfContent + Details
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