By Dan Levine SAN FRANCISCO (Reuters) - A U.S. judge on Thursday rejected a request by patent consortium Rockstar to transfer patent litigation from Google Inc's home turf in California to Texas, according to a court ruling. Rockstar, which counts Apple Inc as an investor, outbid Google and bought thousands of former Nortel patents from Nortel's bankruptcy in 2011 for $4.5 billion. Last year, the consortium sued several handset manufacturers whose phones operate on Google's Android operating system, which fiercely competes with Apple mobile products.



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