[Direct answer]In the Beijing area, if a lawsuit is filed, the creditor's rights will not be extinguished due to the loss of the IOU—the IOU is just evidence, not the creditor's rights themselves. The approach to remedying the evidence is to reconstruct the "loan agreement plus payment of the amount plus the fact of collection" with other materials: transfer records and bank statement proof of payment, chat and call records proving the agreement and collection, and witness testimonies to reinforce the process. The party who snatched the IOU thought they were being clever, but their act of snatching actually left traces (surveillance footage, police reports, and the admitting statements made during the snatching). Properly using these traces can turn into favorable evidence. Before filing a lawsuit, it's better to report the act of snatching to the police first, which achieves two goals at once—not only preserving evidence but also potentially providing leverage for public security or criminal accountability.

I. Problem Background and Typical Scenarios

When collecting the debt, the other party snatched the IOU and tore it up or took it away—“Without the IOU, how can you sue them?”; the lender instantly lost the core evidence and panicked; in fact, the party who snatched the IOU overestimated the importance of the IOU and underestimated the rebuildability of the evidence system.

II. Key points of dispute

First, the path of evidence reconstruction after the loss of the IOU. Second, the transformation of evidence of the act of robbery. Third, the prosecution strategy when there is no IOU. Fourth, the prevention of similar risks.

III. Professional analysis by Henglue Lawyers

First, the three lines of evidence reconstruction: 1. **Delivery Line** — Bank transfer records, WeChat/Alipay payment statements (with electronic receipts available), cash withdrawal records, and witness statements; 2. **Agreement Line** — Chat records before and after the loan, call recordings (with dialogues mentioning amounts, purposes, and repayment dates being most valuable), draft promissory notes or memorandum photos (many people take photos and store them in their phones, making checking their albums the first step); 3. **Collection Line** — Collection-related chats, responses from the other party acknowledging the loan and promising repayment ("I will pay you back in a few days" constitutes an admission), and collection records that also interrupt the statute of limitations. These three lines interconnect to form a closed loop, with courts placing high credibility on evidence that is "consistent across multiple sources". Second, dual utilization of seizure actions: - **Immediate reporting to the police** — Administrative penalties or criminal prosecution (extortion and robbery may apply), with police reports and on-scene records confirming that the promissory note was "seized by the other party". - Surveillance footage, audio/video recordings, and witness statements at the seizure scene prove the existence of the promissory note and its control by the other party — powerful circumstantial evidence of its existence. - Recorded statements from the other party during or after the seizure (e.g., "If I tear it up, I don’t owe you anymore") constitute an admission of the loan. Third, litigation strategies and details: - Filing a lawsuit does not depend on the promissory note’s availability. The complaint should state the seizure of the promissory note and attach police reports. - During trial, focus on evidence chains. If the other party claims "they repaid the loan and retrieved the note," the burden of proof shifts to them (proof of repayment is required). - For large loans lacking direct evidence, consider obtaining notarized evidence and preparing witness statements before litigation. - Check the statute of limitations — the three-year period starts from the expiration of the agreed repayment date or refusal to repay. Seizing the promissory note often occurs during collection efforts, and police reports can prove the statute of limitations was interrupted. Fourth, prevention checklist: - Create two copies of promissory notes and store them online simultaneously; - Use transfers instead of cash for large payments; - Store promissory notes in a safe location, presenting only copies during collection and keeping the originals under control; - Record all collection efforts and have witnesses present — evidentiary practices determine the limits of legal protection. --- **Key translation notes:** 1. Legal terms like "statute of limitations" and "evidence chain" are translated accurately. 2. Phrases like "closed loop" and "circumstantial evidence" retain their legal connotations. 3. Specific examples (e.g., "tearing up the note") are translated to preserve their legal significance. 4. Technical details (e.g., notarized evidence) are clarified for clarity. 5. Structural adjustments ensure logical flow in English.

IV. Practical suggestions and legal basis

The first step is to immediately report the theft of the IOU to the police and keep the receipt and on-site evidence. The second step is to comprehensively organize three types of evidence for reconstruction: transfer records, chat logs, and witness statements. The third step is to state the process of the IOU's loss in the lawsuit and require the other party to provide evidence of "already repaying the debt". The fourth step is to check the statute of limitations and interrupt the renewal period with collection records. The main legal basis includes Articles 667 to 668 and Article 188 of the Civil Code, the Civil Procedure Law and the provisions on civil litigation evidence, Article 49 of the Public Security Administration Punishment Law; the specific application shall be subject to the currently effective provisions.

5. Henglu Law Firm's Reminder

Three key points about losing a promissory note: Even if the promissory note is lost, the creditor's rights still exist, and the evidence chain can be rebuilt; Reporting the case to the police achieves two goals at once—it not only holds the perpetrator accountable but also serves as circumstantial evidence; If the other party claims they have already repaid the money, ask them to provide proof. The burden of proof lies with them, not you. Those involved in promissory note disputes can seek legal assistance through the following channels:Creditor's rights and debts, and enforcement casesThe service provides a comprehensive solution, which can be combined with security and criminal chargesCriminal defense and criminal case filingFor more information on notarization of evidence, please refer to the relevant section.Special servicesFor any questions regarding difficult situations, please feel free to consult us.Special services and other casesColumn.

VI. Frequently Asked Questions

Q1: Will the lawsuit be accepted if there is no promissory note?

Yes; the filing of a lawsuit does not require a promissory note as a prerequisite. Transfer records and chat records, among other things, can form a chain of evidence to initiate a lawsuit. After the case is accepted, the court will make a comprehensive determination of the facts.

Q2: What should I do if there's no transfer record for the cash loan?

Use cash withdrawal records, witnesses present at the time of delivery, and chat records or audio recordings in which the other party admits to borrowing money to strengthen the evidence; it's difficult to prove cases involving only cash without any supporting evidence. Therefore, when lending money, it's better to use a transfer method instead of cash.

Q3: Does demanding a promissory note constitute a crime?

Taking things by force or grabbing them without permission that reach the statutory circumstances may constitute a crime, and in general cases, it can also be subject to public security punishment; reporting the case to the police and keeping records can serve both the purpose of holding those responsible accountable and providing evidence.

Q4: Is the video of the other party tearing up the IOU and taking a photo of it on the spot useful?

It's very useful. The act of tearing up the IOU itself proves the existence of the IOU and the debtor's intention to refuse to repay the debt. The combination of the video and the police report is the most powerful evidence.

Q5: Can a copy of the IOU be used as evidence?

The copy cannot be used as the sole basis for making a decision, but it can be admitted as evidence after being corroborated by transfer records, chat logs, etc. If there are copies, they should be submitted simultaneously and an explanation should be provided regarding the loss of the original documents.

This article is written based on the common judicial interpretations in the Beijing area. If the case occurs in other regions, it is recommended to consult local lawyers to verify the regional differences.

If you are facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the evidence materials, so as to avoid missing the statutory time limit. →\nLegal services for creditor-debtor disputes·Beijing Henglue Law Firm

Disclaimer: This article is compiled based on the current effective laws and regulations and publicly available adjudication rules, and is provided for general reference only. It does not constitute a formal legal opinion on specific cases. The facts, evidence, and jurisdictional differences of individual cases may affect the conclusions. If you encounter disputes, please consult a practicing lawyer in time.