Income taxes	9 Months Ended
Sep. 30, 2015
Income taxes
Income taxes	10. Income taxes In January 2015, we licensed certain intellectual property rights related to our non-partnered clinical programs to our wholly-owned subsidiary in Switzerland. Although the license of intellectual property rights did not result in any gain or loss in the condensed consolidated statements of operations, the transaction generated a taxable gain in the U.S, and we are utilizing available federal and state net operating loss carryforwards to offset the majority of this gain. Any taxes incurred related to intercompany transactions are treated as prepaid tax in our condensed consolidated balance sheets and amortized to income tax expense over the life of the intellectual property. Any cash taxes anticipated to be paid related to this intercompany transaction are immaterial.

Income taxes

9 Months Ended

Sep. 30, 2015

10. Income taxes

In January 2015, we licensed certain intellectual property rights related to our non-partnered clinical programs to our wholly-owned subsidiary in Switzerland. Although the license of intellectual property rights did not result in any gain or loss in the condensed consolidated statements of operations, the transaction generated a taxable gain in the U.S, and we are utilizing available federal and state net operating loss carryforwards to offset the majority of this gain. Any taxes incurred related to intercompany transactions are treated as prepaid tax in our condensed consolidated balance sheets and amortized to income tax expense over the life of the intellectual property. Any cash taxes anticipated to be paid related to this intercompany transaction are immaterial.