To help in the administration of trademarks, most countries in the world have adopted the Nice Classification (International Classification of Nice) which groups all products and services into 45 classes: 34 for products and 11 for services.
For example, assume you want to register 'RackTacket Remote Rockets' in the trademark classes for toys, rockets, and rocket launchers. The names that sound like 'RackTacket Remote Rockets' may still be available in a different trademark category for, say, pharmaceuticals or leather goods. You have claimed toys and rockets rather than the pharmaceutical or leather goods categories.
You can use our Trademark Class Search engine to search your class or you can order a Trademark Study so an attorney can review your products and services and advise you on the classes to apply.