Mealey's (April 17, 2018, 1:28 PM EDT) -- SAN DIEGO — Myriad infringement defendants, including late night television host Conan O’Brien, may amend their answer to levy allegations that a plaintiff freelance comedy writer committed fraud upon the U.S. Copyright Office when seeking copyright protection for a joke, a California federal judge ruled April 13 (Robert Alexander Kaseberg v. Conan O'Brien, et al., No. 15-1637, S.D. Calif., 2018 U.S. Dist. LEXIS 63080)....