These patterns you speak of, are they on your own code or could you do the same with some one else's code? I ask this because I think I could do it with my own

These patterns you speak of, are they on your own code or could you do the same with some one else's code? I ask this because I think I could do it with my own, but not sure if I could with another one's. Or maybe to the odebase of a particular product instead?