(November 25, 2015, 2:38 PM EST) -- SAN FRANCISCO — An expert’s role in a patent infringement lawsuit over the use of a Java operating program does not affect his neutrality in testifying in a copyright infringement lawsuit involving different parties, a California federal judge ruled Nov. 23 (Oracle America, Inc. v. Google, Inc., No. 10-03561, N.D. Calif.; 2015 U.S. Dist. LEXIS 158154)....