Catering trademarks can be divided into the following types:

1. Graphic trademark - This kind of trademark usually consists of graphics or patterns without words or letters. For example, a distinctive restaurant logo could be a graphic trademark.

2. Letter mark - This type of mark usually consists of one or more letters and is designed to identify a restaurant, such as KFC.

3. Word mark - This type of trademark contains only words, without graphics or symbols. For example, "McDonald's" is a word mark.

4. Combination trademark - This kind of trademark contains a combination of graphics, words or symbols. For example, a company logo should have a unique trademark that contains the company name and an icon-like image that represents the company.

5. Unrestricted trademarks - This trademark can include any identifier that identifies the restaurant and represents the business, including images, words, letters or numbers, similar to storefront signs or light boxes.