It is very difficult to survive simply doing trademark application cases at present. Trademark application fees and procedures are becoming more and more transparent, and companies can apply for them themselves. Even if they entrust an agency, the price will not be high.
The only way to contact customers is to make phone calls. Some companies even joked that as long as there are harassing calls, they are either promoted by Baidu or trademarked.
In fact, the way to carry out trademark business is relatively flexible. It is free to do more publicity on the website and enter more forums to speak. The money is spent on publicity in newspapers and advertising in the media. If you have a business card, go out and give it out