The defense moved to exclude her testimony on grounds that her individual experience was irrelevant, but Judge Vaughn Walker denied the motion.
In December 1999, U.S. District Judge Vaughn Walker ruled that the 1990 patent involving Taq polymerase was issued, in part, on misleading information and false claims by scientists with Cetus Corporation.
After clerking for United States District Court for the Central District of California Judge Robert J. Kelleher (1971–72), he practiced in San Francisco at Pillsbury, Madison & Sutro.
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