JPMorgan Chase won the latest round in its long-running dispute with the Federal Deposit Insurance Corp. after a judge ruled the bank doesn't have to shoulder certain liabilities tied to its 2008 takeover of Washington Mutual's banking operations.

The ruling comes in a 2009 lawsuit filed by Deutsche Bank, as a mortgage-bond trustee, over more than $6 billion in securities backed by flawed WaMu mortgages. JPMorgan argued that the FDIC was responsible for any damages owed in the case because its liabilities were limited under a 2008 purchase agreement with the regulator.

U.S. District Judge Rosemary Collyer in Washington issued the two-page order Wednesday.

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