On May 10, 2012, executive Ellen Pao filed a lawsuit against her employer, Silicon Valley-based tech venture capital firm Kleiner Perkins Caufield & Byers (Kleiner Perkins), on grounds of gender discrimination. Pao began working at Kleiner Perkins in 2005. She became a junior investing partner, but after several years at the firm she was passed over for a senior partner position and was eventually terminated. Pao claimed that men with similar profiles and achievements were promoted instead. In late 2011, Pao and a co-worker were asked by a senior partner to come up with ways of improving the firm’s treatment of women, but the senior partner, according to Pao, was “noncommittal.” On January 4, 2012, Pao took this issue a step further and wrote a formal memorandum to several of her superiors and the firm’s outside counsel. In the memorandum, she described harassment she had received while at the firm, claiming she had been excluded from meetings by male partners, and asserting an absence of training and policies to prevent discrimination at the firm. Pao’s memo indicated that she wished to work with the firm on improving conditions for women. She was fired on October 1, 2012. The lawsuit went to trial in February 2015.