There's a disclosure process; if you're concerned someone might in future define your project as relevant, you submit a description of what you're doing and the

There's a disclosure process; if you're concerned someone might in future define your project as relevant, you submit a description of what you're doing and the company has a limited time to claim the project is indeed relevant - if it doesn't do so, then it gives up the right and the project is yours. (Disclaimer: I'm the CTO not a lawyer, so this is just my opinion and doesn't represent the official legal position of my company.)