The term conflict of interest is meaningless in context of someone who no longer works for you. There just can't be one. If you work for a McDonald's then and o

The term conflict of interest is meaningless in context of someone who no longer works for you. There just can't be one. If you work for a McDonald's then and open a burger king next door there is no conflict your public goal was first to aid your employer and now it is to destroy them. It's not a dice roll to find out if you are infringing on IP. If you are aren't infringing you can discourage a lot of bullshit by simply ignoring their strongly worded letter. It costs 30 seconds to send an email but your lawyer needs something real to work with.