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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Intangible Assets by Major Asset Class | The following sets forth the goodwill and intangible assets by major asset class:
|  |  | March 31, 2020 |  | December 31, 2019
| Weighted Average Useful Life (Yrs) | Gross |  | Accumulated Amortization |  | Net Book Value |  | Gross |  | Accumulated Amortization |  | Net Book Value
Indefinite lived: |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill(a) |  |  | $ | 10,513,371 |  |  | $ | — |  |  | $ | 10,513,371 |  |  | $ | 10,513,371 |  |  | $ | — |  |  | $ | 10,513,371 |
Definite lived: |  |  |  |  |  |  |  |  |  |  |  |  |
Licenses | 10 |  | 1,323,761 |  |  | (1,255,291 | ) |  | 68,470 |  |  | 1,323,761 |  |  | (1,248,104 | ) |  | 75,657 |
Bioject(b) | 12 |  | 5,100,000 |  |  | (2,248,889 | ) |  | 2,851,111 |  |  | 5,100,000 |  |  | (2,175,556 | ) |  | 2,924,444 |
Other(c) | 18 |  | 4,050,000 |  |  | (3,412,500 | ) |  | 637,500 |  |  | 4,050,000 |  |  | (3,356,250 | ) |  | 693,750 |
Total intangible assets | 11 |  | 10,473,761 |  |  | (6,916,680 | ) |  | 3,557,081 |  |  | 10,473,761 |  |  | (6,779,910 | ) |  | 3,693,851 |
Total goodwill and intangible assets |  |  | $ | 20,987,132 |  |  | $ | (6,916,680 | ) |  | $ | 14,070,452 |  |  | $ | 20,987,132 |  |  | $ | (6,779,910 | ) |  | $ | 14,207,222 |
(a) | Goodwill was recorded from the Inovio AS acquisition in January 2005, the acquisition of VGX in June 2009 and the acquisition of Bioject in April 2016 for $3.9 million, $6.2 million and $400,000, respectively.
(b) | Bioject intangible assets represent the estimated fair value of developed technology and intellectual property which were recorded from the Bioject asset acquisition.
(c) | Other intangible assets represent the estimated fair value of acquired intellectual property from the Inovio AS acquisition.

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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