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A Deluge of Patents Creates Legal Hassles for Research

Scores of animals have been patented since Harvard claimed the OncoMouse in 1988, creating big headaches for suppliers over the fine print in conditions that have been placed on who could or could not receive animals from their repositories. Now Merck and the National Institutes of Health are funding patent-free mice, which could soon make it easier for all researchers to get access to transgenic mice.