Kathryn Kates, a renowned actress who has performed in TV, theater and film since the mid 1970s, has died at the age of 73. Her representatives confirmed that Kate died Saturday after a struggle with lung cancer. Kates was a much-loved character actress who has shown up in some of the best TV series of all time, including an iconic role in Seinfeld, plus stints on Law & Order: SVU and Orange Is The New Black. Along with almost three decades worth of TV credits, Kates was central in the theater communities of both Los Angeles and New York. She also recently had a supporting role in the long-awa…