It is never a prudent idea to use a name and coloring scheme that is similar to a business in a related market, especially if that business is the Fortune 500 company Prudential Insurance.

The New Jersey-based financial giant recently sued Philadelphia-based Prudential Bank for trademark infringement and unfair competition, claiming that the bank’s recent name change is causing customer confusion. The company, which sells a range of financial products in addition to selling insurance, filed its lawsuit against Prudential Bank Tuesday in the U.S. District Court for the District of New Jersey.