Geron Corporation is a biotechnology company located in Foster City, California which specializes in developing and commercializing therapeutic products for cancer that inhibit telomerase.

[7] The company's Scientific and Clinical Advisory Board has included Nobel laureates James Watson, Gunter Blobel, and Carol Greider, and Leonard Hayflick, known for discovering that human cells divide for a limited number of times in vitro[8] (called the Hayflick limit).

The company is in the early stages of developing a telomerase based treatment for HIV called TAT0002, which is the saponin cycloastragenol in Chinese herb Astragalus propinquus.

[29] GRNOPC1 is an embryonic stem cell based drug that is designed to treat specific forms of spinal cord injury through remyelination of damaged axons.

In 2001 WARF came under public pressure to widen access to human stem-cell technology, and they launched legal action against Geron Corporation to recover some of the previously sold rights.

Another part of the challenge came from the molecular biologist Jeanne Loring who stated that University of Wisconsin–Madison stem cell pioneer James Thomson's techniques (currently patents held by WARF) are rendered obvious by a 1990 paper and two textbooks.

[43] As an interim measure, on January 23, 2007, WARF relaxed the stem cell patents, allowing industry-sponsored research at academic and non-profit institutions without a license.

[45] As a participant in the then-controversial stem cell and cloning area, Geron Corporation was asked to testify about its technology before the U.S. Congress.