(February 4, 2016, 1:37 PM EST) -- NEW YORK — A New York federal judge held Feb. 3 that an insurer is liable for the expenses that its insured paid in defending an underlying patent infringement action minus any "additional expenses" that would not have been incurred but for the presence of three other defendants, further finding that once the insured demonstrates prima facie proof of a particular expense, it is the insurer’s burden to show that it was an "additional expense" that should be allocated and exempted (High Point Design LLC v. LM Insurance Corp., et al., No. 14-cv-7878, S.D. N.Y.; 2016 U.S. Dist. LEXIS 12690)....