JPMorgan Chase (JPM) is one man down in their ongoing legal battle, with one of the firm's main litigation and government investigation lawyers leaving the bank. The mega bank is facing a slew of legal disputes from the London whale trades, bad hiring allegations and various accusations of regulator errors. Reuters has more:

Michael Coyne, who has been associate general counsel and co-head of litigation at JPMorgan, is becoming general counsel of Union Bank and its holding company, UnionBanCal Corp, according to a statement that Union Bank issued on Monday.

Coyne had been at JPMorgan for 21 years and in 2010 became responsible for litigation and government investigation matters worldwide, according to the statement.