They can't take over your house painting business, because that's outside-of-work labor, which they don't own under that clause (some businesses do forbid side

They can't take over your house painting business, because that's outside-of-work labor, which they don't own under that clause (some businesses do forbid side gigs for money). But if you patented something related to house painting, they would own that, even if their business is completely unrelated to painting.