Washington, DC (LifeNews.com) -- Two consumer groups have filed an appeal with the U.S. Patent and Trade Office contesting its March ruling upholding the exclusive patents for stem cells. The office said the Wisconsin Alumni Research Foundation, which holds the original patent on embryonic stem cells, can keep its patents. The patents cover all embryonic stem cells used in the United States and any scientists or research firms wanting them must pay WARF's hefty prices for them. The California-based Foundation for Taxpayer and Consumer Rights and the Consumer Watchdog Foundation are the groups behind the lawsuit and it said WARF...