1. Delphion patent database search for granted US patents containing the term “human embryonic stem cell” within the title and front pages (searched May 24, 2006).
2. Delphion patent database search for granted European patents containing the term “human embryonic stem cell” within the title and front pages (searched May 24, 2006).
3. Directive 98/44/EC of the European Parliament and of the Council of July 6, 1998 on the legal protection of biotechnological inventions, OJ 1998 L213/13.
4. Thomson, J.A. et al. Science 282, 1145–1147 (1998).
5. O.J. EPO 1999, 437. O.J. EPO 1999, 574 for an official commentary.