The Seattle Kraken is facing a lawsuit accusing them of violating trademark law. The Winter Classic jersey, in particular, has come under scrutiny for featuring a red 'S' that closely resembles the one on the Seattle Metropolitan jersey. The lawsuit has been filed by Paul Kim.
Though the gesture to honor the Metropolitans is commendable, the Kraken may face trademark issues if they don't own the rights. Typically, jersey and logo changes go hand in hand with ownership shifts, but this case seems to be an exception.