Legal analysis: The specific period for the preservation of creditor's rights is:

1. Bank account number and deposit: six months for the first time, and three months for the remaining period.

2. Real estate and land: two years for the first time and one year for renewal.

3. Equity: two years for the first time, and one year for additional years.

4. Non-tradable shares of listed companies (state shares, social legal person shares, restricted tradable shares, etc.): one year for the first time and an additional six months.

5. Ordinary shares (tradable shares) of listed companies: frozen for two years for the first time and one year for additional years.

6. Bonds: one year for the first time, and then frozen for six months.

7. Vehicles: No time limit (the Vehicle Management Office of Shanghai Public Security Bureau does not accept time limit seizures).

8. Machinery, equipment and goods: one year for the first time.

9. Maturity of creditor's rights: two years for the first time, and one year for additional years.

10. Patent and trademark rights: six months each time.

Article 29, paragraph 1, of the "People's Court's Provisions on Seizing, Detaining, and Freezing Property in Civil Execution by People's Courts" stipulates the period of property preservation in three categories. The first The maximum period for the freezing of bank deposits and other funds in the second category is one year, the maximum period for the seizure and seizure of movable property in the second category, and the maximum period of two years for the seizure of real estate and freezing of other property rights in the third category. It does not clearly stipulate the period for the preservation of maturing claims, nor does it clearly state which of the above three categories should be included in the preservation of maturing claims. Since a property preservation ruling has legal effect when it is made by the people's court, the time limit for property preservation should be clarified when making a ruling.

Legal basis: "Regulations of the Supreme People's Court on Seizing, Detaining, and Freezing Property in Civil Enforcement by People's Courts" Article 29 The period for the People's Court to freeze the bank deposits and other funds of the person subject to execution shall not exceed Six months, the period for sealing up or detaining movable property shall not exceed one year, and the period for sealing up or freezing other property rights shall not exceed two years. Unless otherwise provided by law or judicial interpretation.

If the person applying for execution applies to extend the time limit, the people's court shall handle the renewal procedures for sealing, impounding, and freezing before the expiration of the period of sealing, seizure, and freezing. The renewal period shall not exceed half of the period specified in the preceding paragraph. one.