Remove these screws and the handle should simply fall off.
Patio door handle broken.
The fix clips that hold the panels in place often get broken or get lost.
My patio door is about 27 years old.
You also might want to add or replace a keylock on the outside so you can open your patio door with a door key.
You should secure the door so it can t be pulled shut and then take off the handle.
It has an acorn dorwal handle set.
In addition to patio door handles handles there are other bits and pieces that often need replacing on patio doors.
The number on the inside piece is l 120.
The inside piece of the handle holder has broken in half at one of the screw holes.