1. As long as it does not violate the prohibitive provisions of the Trademark Law, such as country name, national flag, national emblem, etc. If your friend has already thought of a name, simple and generous design is the best, and the graphic trademark office that is too complicated will refuse it.

2. There is no requirement on what software to design and what format to save, mainly the effect after printing on paper, which is generally 72- 130 pixels on paper, 28-72 pixels on inkjet paper and 30-300 pixels on photographic paper. Then the required size for trademark submission is10x1.

Don't worry, in fact, the requirements are not harsh, and I believe you will design it well.