You have a legitimate use case and are using it in good faith. I can't imagine any scenario where someone would have any success in taking it away from you agai

You have a legitimate use case and are using it in good faith. I can't imagine any scenario where someone would have any success in taking it away from you against your will unless you made a mistake in letting the registration lapse or something. Make sure you've got auto renewal set up, with a reputable registrar.