License Agreements	12 Months Ended
Dec. 31, 2011
License Agreements [Abstract]
License Agreements	9. License agreements The Company has in-licensed antibodies, targets and enabling technologies from pharmaceutical and biotechnology companies and academic institutions for use in our pipeline programs and ADC technology, including the following: Bristol-Myers Squibb. In March 1998, the Company obtained rights to some of its technologies and product candidates, portions of which are exclusive, through a license agreement with Bristol-Myers Squibb. Through this license, the Company secured rights to monoclonal antibody-based cancer targeting technologies, including patents, monoclonal antibodies, chemical linkers, including the linker used in ADCETRIS and other product candidates, a ribosome-inactivating protein and enabling technologies. Under the terms of the license agreement, the Company is required to pay a low single-digit royalty on net sales of products, including ADCETRIS, that incorporate patented technology licensed from Bristol-Myers Squibb. University of Miami. In September 1999, the Company entered into an exclusive license agreement with the University of Miami, Florida, covering an anti-CD30 monoclonal antibody that is the basis for the antibody component of ADCETRIS. Under the terms of this license, the Company made an upfront payment and progress-dependent milestone payments. The Company is obligated to pay annual maintenance fees and a low single-digit royalty on net sales of products, including ADCETRIS, incorporating technology licensed from the University of Miami. CLB-Research and Development. In July 2001, the Company obtained an exclusive license to specific monoclonal antibodies that target cancer and autoimmune disease targets from CLB-Research and Development, a division of Sanquin Blood Supply Foundation, located in the Netherlands. One of these antibodies is the basis for SGN-70 and the antibody component of SGN-75. Under the terms of this agreement, the Company made upfront and option exercise payments and is required to make progress-dependent milestone payments and pay a low single-digit royalty on net sales of products incorporating technology licensed from CLB-Research and Development. Other Licenses. The Company has other non-exclusive licenses to other technology used in ADCETRIS that require the Company to pay royalties ranging from the low to mid-single digits on net sales of ADCETRIS.

9. License agreements

The Company has in-licensed antibodies, targets and enabling technologies from pharmaceutical and biotechnology companies and academic institutions for use in our pipeline programs and ADC technology, including the following:

Bristol-Myers Squibb. In March 1998, the Company obtained rights to some of its technologies and product candidates, portions of which are exclusive, through a license agreement with Bristol-Myers Squibb. Through this license, the Company secured rights to monoclonal antibody-based cancer targeting technologies, including patents, monoclonal antibodies, chemical linkers, including the linker used in ADCETRIS and other product candidates, a ribosome-inactivating protein and enabling technologies. Under the terms of the license agreement, the Company is required to pay a low single-digit royalty on net sales of products, including ADCETRIS, that incorporate patented technology licensed from Bristol-Myers Squibb.

University of Miami. In September 1999, the Company entered into an exclusive license agreement with the University of Miami, Florida, covering an anti-CD30 monoclonal antibody that is the basis for the antibody component of ADCETRIS. Under the terms of this license, the Company made an upfront payment and progress-dependent milestone payments. The Company is obligated to pay annual maintenance fees and a low single-digit royalty on net sales of products, including ADCETRIS, incorporating technology licensed from the University of Miami.

CLB-Research and Development. In July 2001, the Company obtained an exclusive license to specific monoclonal antibodies that target cancer and autoimmune disease targets from CLB-Research and Development, a division of Sanquin Blood Supply Foundation, located in the Netherlands. One of these antibodies is the basis for SGN-70 and the antibody component of SGN-75. Under the terms of this agreement, the Company made upfront and option exercise payments and is required to make progress-dependent milestone payments and pay a low single-digit royalty on net sales of products incorporating technology licensed from CLB-Research and Development.

Other Licenses. The Company has other non-exclusive licenses to other technology used in ADCETRIS that require the Company to pay royalties ranging from the low to mid-single digits on net sales of ADCETRIS.