Custom bumper buttons on Playstation 5 controller housing

Good Morning, My partner Scott and I have started a company, Tasman gaming pty ltd. We have sorted the electronic side of the controller and need to incorporate four buttons into the back housing of the PS5 controller. We cannot have plain buttons and paddles as per the attached photo due to patent issue but would like to have a trigger system similar to the triggers in the yellow squares (see attached photo) but keep the shape, size and position of the paddle shaped buttons in the red square (see attached photo). Would be happy for the trigger mechanisms to be housed in an extra "box" shaped area extending out from the current housing (similar to attached photo). We are happy to have a back housing of the controller shipped to the person working on this project for reference as the way the sizings and the way the back housing connects to the front housing is very important. Have also attached a rough trigger mechanism for reference but would be happy for someone to use their expertise to fine tune and/or design this aspect into the back housing. We would like the designer to question any areas of uncertainty but we need someone experienced to also maintain the current shape, feel and ergonomics of the current playstation 5 controller. Kind Regards Sam & Scott Tasman Gaming Pty Ltd