1. It definitely has an effect, but the size is another matter. Trademark agency is generally about getting business. In fact, you can do it no matter what major you study. The key is to see the capabilities of your old business.

2. The workload generally depends on you, just like a salesperson. If you have more customers, you will naturally be busy and have a lot to do.

3. Trademark agency generally starts with trademark application, so it is very one-sided. Moreover, the cycle of this trademark matter is indeed relatively long and tiring. The specifics will depend on how your firm wants to train you, whether it just wants you to get business, or whether it wants you to be more developed. If your career plan is to become an intellectual property lawyer, then you have too much to learn. You will not be able to become an intellectual property lawyer even if you work as a trademark agent for a lifetime. I suggest you consider it carefully. It is best to choose a large and professional intellectual property law firm. Don't waste time, delay things!

I wish you all the best!