Commercial litigation lawyer Paris
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Commercial litigation lawyer Paris: unpaid invoices, contracts, disputes between businesses. Present your case to us.
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Kohen Avocats, Paris 17
Commercial litigation: what really decides the case
Business law · Paris 17th arrondissement
What a commercial litigation lawyer in Paris does
- Paris Bar
- Business law
- Firm in Paris 17th arrondissement
Lawyer at the Paris Bar — commercial litigation, urgent applications and enforcement.
For an obligation to pay a sum of money, a formal notice starts default interest running (Article 1344-1 of the French Civil Code), but on its own it does not interrupt the limitation period. A claim brought before a court, even in urgent proceedings, in principle has that effect (Article 2241). An urgent application for an interim payment secures cash flow where the obligation is not seriously contestable; an expert assessment under Article 145 rebuilds the evidence before trial; a writ of summons on the merits delivers the full enforceable title. Before the commercial court, a lawyer is mandatory above €10,000. The enforcement phase is prepared from the writ of summons onwards: a judgment against a debtor stripped of assets is worth nothing.
Send what you have, even if incomplete: the firm will prioritise and complete the file with you. In an emergency, call +33 6 46 60 58 22.
Official profile in the directory of French lawyers (CNB)Firm at 11 rue Margueritte, 75017 Paris
Urgent applications, the weapon of short timescales
An interim payment where the obligation is not seriously contestable, and protective measures against a manifestly unlawful disturbance (Article 873 of the Code of Civil Procedure) — a few weeks at the Paris commercial court.
Freedom of evidence between traders
Emails, invoices, purchase orders and delivery notes, properly kept accounts: everything is admissible (Article L. 110-3) — provided you have kept, dated and organised it.
Enforcement, a strategic phase
An enforceable title does not pay by itself: garnishment of bank accounts, seizure of company shares, seizure and sale of movable assets, real property seizure — enforcement is managed like a cash-flow operation.
Key levers
Formal notice, urgent application, expert assessment, merits
Four rules shape litigation strategy.
- A formal notice is a legal act, not a reminder: for a monetary debt, it formalises the default and starts default interest running. Interrupting the limitation period requires a separate act provided for by law.
- An urgent application for an interim payment (Article 873 of the Code of Civil Procedure) obtains payment within a few weeks where the obligation is not seriously contestable; a serious dispute stands in its way (decision linked on the page).
- An Article 145 expert assessment rebuilds the evidence before any trial: accounts, goods, information systems.
- Evidence between traders is unrestricted (Article L. 110-3): emails, invoices, orders, accounts — in both directions, for the claimant as for the defendant.
Sudden termination of an established commercial relationship remains one of the most frequent disputes: the notice period is assessed by reference to the length of the relationship and other circumstances, including for a manager under a management mandate (Cass. com., 2 October 2019, No. 18-15.676). Enforcement is prepared from the outset: solvency checked, protective attachment if assets risk being moved out of reach.
Your documents
What you need to send to characterise the dispute
The quality of the file determines the choice of lever and how long collection takes.
Position A
Claimant
- Contract, general terms of sale, purchase orders and delivery notes
- Unpaid invoices and an up-to-date statement of account
- Written exchanges and formal notices
- Evidence of the debtor's solvency (accounts, BODACC)
Position B
Defendant
- Proof of payment or of proper performance
- Objections raised at the time
- Documented defects or non-conformities
- Counterclaims that can be quantified
Frequent mistakes: chasing payment without a formal notice; issuing a writ on the merits for a claim that is not seriously contestable and belonged in urgent proceedings.
The firm also uses:
- Protective attachment
- Article 145 expert assessment
- Jurisdiction clauses and arbitration
- Enforcement judge
The method
How the firm supports you
The lever is chosen on the balance of result, cost and timing, not on habit.
Step 1
Review and characterisation
Full reading of the documents, legal characterisation, legal grounds, quantification of the loss.
Step 2
Detailed formal notice
A quantified act, precise legal grounds and a reasonable time limit; separate check on the limitation period and preparation of the act that interrupts it.
Step 3
Appropriate measure
Protective attachment, Article 145 expert assessment, urgent application for an interim payment or writ of summons on the merits, depending on the case.
Step 4
Judgment and enforcement
Pleading, enforceable title, seizures suited to the assets identified, and follow-up until payment is received.
Key points: a lawyer is mandatory before the commercial court above €10,000; an interim payment obtained in a few weeks in Paris; five-year limitation period.
The timetable
The timeline of a commercial litigation case
From case review to collection.
Review
Weeks 1-2. Documents, characterisation, legal grounds, quantification, the opponent's solvency.
Formal notice
Weeks 2-3. Detailed, quantified formal notice with a deadline to respond; writ of summons or application prepared before the limitation period expires.
Protective measures
If there is a risk. Protective attachment before trial to freeze assets.
Urgent application
Weeks 4-10. Interim payment or protective measures before the president of the commercial court.
Merits
Months 3-18. Writ of summons, pre-trial case management, submissions, expert assessment if needed, oral argument, judgment.
Enforcement
Service of the judgment, seizures, handling of challenges before the enforcement judge.
The checks
What the firm checks before acting
No proceedings without first validating these points.
- Claim or request: certain, liquidated and due — or seriously contestable.
- Evidence in order: contracts, invoices, orders, exchanges, accounts.
- Limitation period and calculation of time limits from each triggering event.
- The opponent's solvency and identified seizable assets.
- Jurisdiction: commercial court, jurisdiction clause, arbitration.
- Economics of the proceedings: total cost compared with what is recoverable.
Summary
Situation, risk, act, decision
The most frequent trade-offs seen in the firm's litigation cases.
Situation
Unpaid invoice not seriously contested
Main risk: Cash flow eroding, limitation period running.
Preferred step: Urgent application for an interim payment (Article 873 of the Code of Civil Procedure).
Recommended decision: Apply to the urgent applications judge of the commercial court.
Situation
Accounts or goods to be reconstituted
Main risk: Loss of evidence, deterioration.
Preferred step: Court-appointed expert assessment under Article 145 of the Code of Civil Procedure.
Recommended decision: Application by order on petition before any trial.
Situation
Fragile debtor likely to engineer their insolvency
Main risk: Judgment that cannot be enforced.
Preferred step: Protective attachment before the trial on the merits.
Recommended decision: Seek authorisation from the enforcement judge.
Situation
Dispute over a complex contractual obligation
Main risk: Time to judgment, burden of proof.
Preferred step: Writ of summons on the merits before the commercial court.
Recommended decision: Prepare the complete file before the case is first entered on the court list.
Situation
Sudden termination of an established commercial relationship
Main risk: Loss of earnings over the notice period.
Preferred step: Action under Article L. 442-1 II of the Commercial Code.
Recommended decision: Quantify the loss using the average gross margin over three years.
Situation
Judgment obtained, uncooperative debtor
Main risk: Debtor inaction, dissipation of assets.
Preferred step: Garnishment order, seizure of company shares.
Recommended decision: Instruct the bailiff as soon as the judgment is served.
Frequently asked questions
Your questions: commercial litigation
What is the difference between urgent proceedings and a writ of summons on the merits?
Urgent proceedings are a fast procedure that leads, within a few weeks, to a provisional order. The urgent applications judge does not decide the substance of the dispute. The judge awards an interim payment if the obligation is not seriously contestable (Article 873 of the French Code of Civil Procedure), orders protective measures or orders an end to a manifestly unlawful disturbance. A writ of summons on the merits brings the case before the court, which settles the dispute definitively by a judgment that is fully enforceable. The interim payment awarded in urgent proceedings is deducted from the sum awarded on the merits.
What is an urgent application for an interim payment and when should it be used?
The urgent application for an interim payment is the tool of the diligent creditor. It makes it possible to obtain a provisional order to pay against the debtor where the obligation is not seriously contestable, without waiting for the trial on the merits. It typically suits unpaid invoices documented by a contract or a purchase order, accompanied by reminders that have proved fruitless. The procedure takes a few weeks before the commercial court of the defendant's registered office. Once the order is made, the bailiff serves it and carries out enforcement.
How does a court-appointed expert assessment under Article 145 of the Code of Civil Procedure work?
Article 145 of the Code of Civil Procedure allows a measure of inquiry to be requested before any trial where there is a legitimate reason to preserve or establish evidence of facts on which the outcome of a dispute may depend. The application is made to the president of the court, who appoints an expert. The expert summons the parties, examines the documents, organises adversarial proceedings and files a report. This tool is valuable for reconstituting accounts, assessing a defective product or objectively establishing damage before proceedings on the merits are started.
Must the commercial court always be used, or sometimes the judicial court?
The commercial court has jurisdiction over disputes between traders or corporate entities that are traders, and over disputes relating to commercial acts. The judicial court takes over as soon as one party to the dispute is not a trader (a consumer, for example) or, in mixed disputes, at the choice of the non-trader. The firm checks jurisdiction before the first filing, because a writ issued before the wrong court meets a plea of lack of jurisdiction and wastes time.
How does a hearing before the Paris commercial court proceed?
The case is entered on the court list after the writ of summons. Pre-trial case management allows the parties to exchange submissions and documents. At the oral hearing, the lawyer presents the written pleadings orally, answers questions from the commercial judges and concludes. The deliberation generally takes four to eight weeks. The judgment is notified, then served if enforcement is contemplated. The avenues of challenge (appeal, opposition depending on the procedure) run from service.
Is a lawyer mandatory before the commercial court?
Yes for any claim above €10,000, in accordance with Article 853 of the Code of Civil Procedure, subject to limited exceptions (proceedings under Book VI, disputes concerning the commercial register). For claims of €10,000 or less, the parties may appear in person or be represented by any person of their choice holding a special power of attorney. Above the threshold, a lawyer must be instructed and the pleadings must be signed by a lawyer.
What types of evidence are admitted in a commercial dispute?
Between traders, evidence is unrestricted under Article L. 110-3 of the Commercial Code: all written, electronic, accounting or physical items are admitted. This includes emails, invoices, purchase orders, delivery notes, account statements, stock records, third-party statements and screenshots. Where the other party is not a trader, the formal rules of the Civil Code apply again for transactions exceeding €1,500 (a signed document is required), unless there is a commencement of proof in writing or a moral or material impossibility of obtaining a written document.
How can a judgment be enforced against an uncooperative debtor?
Once the judgment has been served and any time limit for opposition has expired, the commissaire de justice (bailiff) can carry out enforcement measures: garnishment order on the bank account, seizure and sale of equipment, seizure of company shares, attachment of earnings, real property seizure. The choice depends on the nature of the assets identified. The firm manages enforcement like a cash management operation, selecting the step that is quickest to turn into actual payment.
What is a protective attachment and when should it be used?
A protective attachment makes it possible to freeze the debtor's assets before any enforceable title exists, in order to secure future recovery. It is ordered with the authorisation of the enforcement judge, provided the claim appears well founded in principle and circumstances threaten recovery (a debtor in difficulty, engineered insolvency, dissipation of assets). It is then converted into a garnishment order once judgment is obtained. It is a key tool against debtors likely to make themselves insolvent before the decision on the merits.
What is the limitation period for a commercial claim?
Five years between traders, or between traders and non-traders for obligations arising in connection with their trade, in accordance with Article L. 110-4 of the Commercial Code. Certain special actions are subject to shorter periods. Under Articles 2240, 2241 and 2244 of the Civil Code, the limitation period is interrupted in particular by the debtor's acknowledgement of the right, a claim brought before a court even in urgent proceedings, a protective measure or an act of enforcement. An out-of-court formal notice, even one sent by registered letter, does not interrupt it on its own. The Court of Cassation applied the same rule to a contractual time bar (Cass. com., 8 July 2026, No. 25-12.679).
Does sudden termination of an established commercial relationship give a right to compensation?
Yes, under Article L. 442-1, II of the Commercial Code. Any person carrying on an economic activity who suddenly terminates, even partially, an established commercial relationship without sufficient written notice incurs liability. The notice period is assessed in particular by reference to the length of the relationship, trade usages and inter-trade agreements. The loss is quantified on the average gross margin lost during the notice period that should have been granted. The Court of Cassation clarified the application of this provision to a manager under a management mandate (Cass. com. 2 October 2019, No. 18-15.676).
How is a commercial loss quantified?
Three main components: the loss incurred (unpaid invoices, expenses wasted, replacement costs), loss of earnings (gross margin not achieved during the wrongful period, calculated on the average of the three previous financial years), and ancillary costs (cash financing, legal fees under Article 700 of the Code of Civil Procedure). For technical or accounting losses, quantification rests on an adversarial expert report, whether court-ordered or agreed. The firm documents each item so that it withstands the opponent's criticism.
How much does an urgent application before the commercial court cost?
Beyond bailiff's fees (service of the writ of summons, about €100 to €200), lawyer's fees vary with the complexity, the amount at stake and the quality of the evidence. For a standard urgent application for an interim payment on an unpaid invoice, fees can be set at a fixed amount. For high-stakes cases or complex evidence, a preliminary discussion makes it possible to define a budget. The firm systematically provides a written quotation before engagement.
What should I do if I have been summoned before the commercial court?
First step: take note of the hearing date and of the opposing submissions. Second step: consult a lawyer quickly, because the time limits for filing submissions are short. Third step: review the documents, identify serious disputes and prepare evidence of proper performance or payment. The defence may rely on lack of jurisdiction, the fact that the obligation is seriously contestable (in urgent proceedings), limitation or nullity. A well-prepared defendant sometimes avoids an adverse judgment and even obtains a counterclaim award against the opponent.
Can the parties settle during the proceedings to avoid a judgment?
Yes, at any stage. A settlement agreement (Article 2044 of the Civil Code) ends the dispute through reciprocal concessions and has the authority of res judicata between the parties. It avoids the uncertainty of a judgment, speeds up payment and preserves confidentiality. The firm frequently conducts settlement negotiations alongside the proceedings, in particular after an urgent order or a court-appointed expert's report that reshuffles the cards. The settlement is then approved by the court where necessary to become enforceable.
Sources and related pages
Official texts and related pages
The sources for this page and the firm's related areas of practice.
Further reading
Page updated on 27 July 2026.
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Translated from French
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Translated from French
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Translated from French
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Translated from French
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