The usefulness of an agreement written in a law firm depends on the following circumstances:

1. This agreement shall come into force after being signed or sealed by all parties to the contract. If the conditions for entry into force are stipulated in the agreement, the agreement will only take effect when the conditions are met. A contract sent by e-mail has no legal effect without signature and seal;

2. The electronic signatures and seals of both parties (electronically sent by scanning and taking photos after signature and seal) have legal effect.

The agreement signed with the lawyer shall be an agency contract, which shall specify the following contents:

1. Agree on specific and clear entrustment matters;

2, clear authorization, general agent or special authorization;

3. When defining the obligations of law firms and lawyers;

4. Define the customer's obligations;

5. Agree to pay legal fees;

6. The validity period of the contract;

7. Conditions for termination of the contract;

8. Both parties' liabilities for breach of contract;

9. Solutions to disputes between the two parties, etc.

To sum up, the agreement written by the law firm needs to have legal effect, so before signing the agreement, you should carefully review the contents of the agreement and make sure that the contents in the agreement are in line with your own wishes, otherwise it may adversely affect your own interests. In addition, if there is any dispute during the execution of the agreement, both parties shall solve it through legal channels.

Legal basis:

Article 490 of the Civil Code of People's Republic of China (PRC)

If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.