- Prevent misappropriation of goodwill
- Prevent consumer deception or fraud
Four types of trademarks:
- Fanciful: made-up (like "Kodak")
- Arbitrary: the meaning is not related to the product
- Suggestive: name suggests but does not describe ("Tide," "Roach Motel")
- Descriptive: can only be trademarked if the mark acquires "secondary meaning"
- generally requires showing 5 years of uninterrupted use