Collaborative Research, Development and License Agreements	9 Months Ended
Sep. 30, 2018
Research And Development [Abstract]
Collaborative Research, Development and License Agreements	7. Collaborative Research, Development and License Agreements AstraZeneca Pursuant to a research collaboration and license agreement with AstraZeneca AB (“AstraZeneca”), as amended, we discovered and performed initial clinical development of AZD1419, a TLR9 agonist product candidate for the treatment of asthma. In June 2016, all of our remaining performance obligations under our agreement with AstraZeneca were completed. Under the terms of the agreement, as amended, we are eligible to receive up to approximately $100 million in additional milestone payments, based on the achievement of certain development and regulatory objectives. Additionally, upon commercialization of AZD1419, we are eligible to receive tiered royalties ranging from the mid to high single-digits based on product sales of any products originating from the collaboration. We have the option to co-promote in the United States products arising from the collaboration, if any. AstraZeneca has the right to sublicense its rights upon our prior consent. Absent early termination, the agreement will expire when all of AstraZeneca’s payment obligations expire. AstraZeneca has the right to terminate the agreement at any time upon prior written notice and either party may terminate the agreement early upon written notice if the other party commits an uncured material breach of the agreement. Merck, Sharp & Dohme Corp. In February 2018, we entered into a Sublicense Agreement (the “Sublicense Agreement”) with Merck Sharpe & Dohme Corp. (the “Sublicensor”). The Sublicense Agreement grants us, under certain non-exclusive U.S. patent rights controlled by the Sublicensor which relate to recombinant production of hepatitis B surface antigen, the right to manufacture, use, offer for sale, sell and import HEPLISAV-B in the United States and includes the right to grant further sublicenses. Under the terms of the Sublicense Agreement, we are obligated to pay $21.0 million in three installments. The first installment of $7.0 million was paid in February 2018 and the remaining two payments of $7.0 million each are due in the first quarter of each of 2019 and 2020. The payments in 2019 and 2020 are classified on the condensed consolidated balance sheets as other current liabilities and other long-term liabilities, respectively. In February 2018, we recorded $19.8 million as an intangible asset. At September 30, 2018, the intangible asset balance was $14.0 million, net. See Note 5. The agreement continues in effect through April 2020, at which time the license becomes perpetual, irrevocable, fully paid-up and royalty free. GlaxoSmithKline Biologicals SA On July 12, 2018, we entered into a sublicense agreement with GlaxoSmithKline Biologicals SA (“GSK”). The GSK sublicense agreement grants us, under certain non-exclusive U.S. patent rights controlled by GSK, the right to manufacture, use, offer to sell, sell and import HEPLISAV-B in the United States and includes the right to grant further sublicenses. In consideration, we paid a $1.5 million license fee to GSK in July 2018 and recorded this payment as an intangible asset. At September 30, 2018, the intangible asset has been fully amortized. See Note 5. In addition, we were obligated to pay GSK, royalties of 13% of net sales of HEPLISAV-B from December 1, 2017 through July 31, 2018 (“Royalty Term”). For the three months ended September 30, 2018, we recorded $0.2 million of royalties in cost of sales – product in the condensed consolidated statements of operations. Coley Pharmaceutical Group, Inc. In June 2007, we entered into a license agreement with Coley Pharmaceutical Group, Inc. (“Coley”), under which Coley granted us a non-exclusive, royalty bearing license to patents, with the right to grant sublicenses for HEPLISAV-B (the “Coley Agreement”). We met one of the regulatory milestones upon FDA approval of HEPLISAV-B in November 2017 and paid $2.5 million in January 2018 to Coley which is recorded as an intangible asset on the condensed consolidated balance sheets. See Note 5. The Coley Agreement terminated in February 2018, at which time the license became a perpetual, irrevocable, fully paid-up and royalty-free license. As of September 30, 2018, the $2.5 million intangible asset has been fully amortized.

7. Collaborative Research, Development and License Agreements

AstraZeneca

Pursuant to a research collaboration and license agreement with AstraZeneca AB (“AstraZeneca”), as amended, we discovered and performed initial clinical development of AZD1419, a TLR9 agonist product candidate for the treatment of asthma. In June 2016, all of our remaining performance obligations under our agreement with AstraZeneca were completed.

Under the terms of the agreement, as amended, we are eligible to receive up to approximately $100 million in additional milestone payments, based on the achievement of certain development and regulatory objectives. Additionally, upon commercialization of AZD1419, we are eligible to receive tiered royalties ranging from the mid to high single-digits based on product sales of any products originating from the collaboration. We have the option to co-promote in the United States products arising from the collaboration, if any. AstraZeneca has the right to sublicense its rights upon our prior consent.

Absent early termination, the agreement will expire when all of AstraZeneca’s payment obligations expire. AstraZeneca has the right to terminate the agreement at any time upon prior written notice and either party may terminate the agreement early upon written notice if the other party commits an uncured material breach of the agreement.

Merck, Sharp & Dohme Corp.

In February 2018, we entered into a Sublicense Agreement (the “Sublicense Agreement”) with Merck Sharpe & Dohme Corp. (the “Sublicensor”). The Sublicense Agreement grants us, under certain non-exclusive U.S. patent rights controlled by the Sublicensor which relate to recombinant production of hepatitis B surface antigen, the right to manufacture, use, offer for sale, sell and import HEPLISAV-B in the United States and includes the right to grant further sublicenses. Under the terms of the Sublicense Agreement, we are obligated to pay $21.0 million in three installments. The first installment of $7.0 million was paid in February 2018 and the remaining two payments of $7.0 million each are due in the first quarter of each of 2019 and 2020. The payments in 2019 and 2020 are classified on the condensed consolidated balance sheets as other current liabilities and other long-term liabilities, respectively. In February 2018, we recorded $19.8 million as an intangible asset. At September 30, 2018, the intangible asset balance was $14.0 million, net. See Note 5. The agreement continues in effect through April 2020, at which time the license becomes perpetual, irrevocable, fully paid-up and royalty free.

GlaxoSmithKline Biologicals SA

On July 12, 2018, we entered into a sublicense agreement with GlaxoSmithKline Biologicals SA (“GSK”). The GSK sublicense agreement grants us, under certain non-exclusive U.S. patent rights controlled by GSK, the right to manufacture, use, offer to sell, sell and import HEPLISAV-B in the United States and includes the right to grant further sublicenses. In consideration, we paid a $1.5 million license fee to GSK in July 2018 and recorded this payment as an intangible asset. At September 30, 2018, the intangible asset has been fully amortized. See Note 5. In addition, we were obligated to pay GSK, royalties of 13% of net sales of HEPLISAV-B from December 1, 2017 through July 31, 2018 (“Royalty Term”). For the three months ended September 30, 2018, we recorded $0.2 million of royalties in cost of sales – product in the condensed consolidated statements of operations.

Coley Pharmaceutical Group, Inc.

In June 2007, we entered into a license agreement with Coley Pharmaceutical Group, Inc. (“Coley”), under which Coley granted us a non-exclusive, royalty bearing license to patents, with the right to grant sublicenses for HEPLISAV-B (the “Coley Agreement”). We met one of the regulatory milestones upon FDA approval of HEPLISAV-B in November 2017 and paid $2.5 million in January 2018 to Coley which is recorded as an intangible asset on the condensed consolidated balance sheets. See Note 5. The Coley Agreement terminated in February 2018, at which time the license became a perpetual, irrevocable, fully paid-up and royalty-free license. As of September 30, 2018, the $2.5 million intangible asset has been fully amortized.