Mac is right.

Unfortunately, it has been argued that transitional chords follow the rules of melody and harmony, and are not part of the chord structure. That is, is a transitional chord just a chord, or is it melody in three part harmony. If the transitional chords allow the tune to be recognized, you could have a problem.

A legal action can cost you everything you own, just to pay the lawyers, so it's as well to be sure of your ground.

ROG.