Earlier quoted context omitted.
You can call it anything you like but it's still the repairing of DNA. It will be contested in Court and the patent holder will lose.
What's your source for this? This isn't how patent law works. You can't patent "repairing a road" but you can absolutely patent a new mechanism to do so. Most patents are of this form - there are far more patents for improved ways of doing things than initial ways of doing things.
If several genes are faulty and I repair them what would be the innovation? The detection of a specific set of faulty genes? The order of repair?
Big Pharma has long figured this out and I have inside knowledge from people who know that this is the reason they're not pursuing it.
P.S.: Big Pharma is now quietly also researching gene repair but I believe it's to hedge their bets. Maybe they're counting on "lobbying"/bribing politicians to allow them to patent gene repair regardless.