2. Entrust a lawyer to investigate and collect evidence. Due to the strong professionalism of intellectual property cases, it will be difficult for the obligee to obtain evidence by himself, and it is very difficult to accurately grasp the direction and scope of obtaining evidence. Lawyers specialize in legal work and provide legal services to the society as their profession. Lawyers not only have rich legal knowledge, but also have rich experience in handling cases and skilled litigation skills, and can make appropriate choices for the parties at different stages of litigation. Generally speaking, it is much more convenient for lawyers to investigate and collect evidence than the parties, and the scope of evidence collection is more extensive and accurate.
3. Investigate and collect evidence through judicial organs. One of the statutory businesses of the notary office is to "preserve evidence", and the law presumes that the notarized evidence is true. It is an important choice to make full use of the notary office to collect and preserve evidence before litigation.