if I run my finger over them I cannot feel them. The only time I know they are there is if the tv is off. The only way I can feel them is if I use my finger nail and then I can feel the groove if you will and that was how I found out that they were scratches, hope this helps.
If you can't see them with the set on, you should leave them alone. Anything you do in terms of scratch repair could make things worse. Fillers and buffers will likely be visible with the set on.
It doesn't sound like this is impacting your viewing experience, but it is, rather, a minor cosmetic problem.