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Intangible Assets and Goodwill
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets and Goodwill Intangible Assets and Goodwill
Intangible assets and Goodwill consisted of the following at December 31, 2022 and 2021.
20222021
Product and license rights$49,668,141 $38,543,542 
Less: accumulated amortization(21,891,974)(18,015,112)
Total product and license rights27,776,167 20,528,430 
Patents10,610,228 10,478,930 
Less: accumulated amortization(8,051,018)(7,333,251)
Total patents2,559,210 3,145,679 
Trademarks397,974 373,462 
Less: accumulated amortization(142,673)(93,096)
Total trademarks255,301 280,366 
Total intangible assets$30,590,678 $23,954,475 
Goodwill$914,000 $882,000 
Product and license rights include assets associated with the Company's acquired products, including those discussed in Note 3, RediTrex, Vibativ and Sancuso. RediTrex is only represented in 2021.
During 2022 and 2021, the Company recorded an additional $0.2 million in each year in intangible assets for patents, trademarks and capitalized patent costs, including amounts incurred in the protection of the Company's intellectual property. The Company also recorded an additional $14.1 million in product rights and $0.03 million in goodwill related to the Sancuso acquisition. These costs will be amortized over the remaining expected useful life of the associated patents.
Amortization expense related to product and license rights, trademarks and patents were as follows for the years ended December 31:
20222021
Amortization expense$5,067,368 $4,371,300 

The expected amortization expense for the Company's current balance of intangible assets are as follows:
Year ending December 31:
2023$4,736,657 
20244,687,365 
20254,652,156 
20264,092,961 
2027 and thereafter12,421,539 
$30,590,678