#Unfair Competition Lawyer in France

Unfair competition covers all wrongful conduct that upsets the equal footing between businesses in a market. It rests on tort liability under Articles 1240 and 1241 of the French Civil Code (Code civil). An unfair competition lawyer identifies the wrongful act, establishes the loss and brings the action for compensation. Hashtag Avocats, a Paris law firm, defends businesses that are victims as well as those accused, in urgent interim proceedings (référé) and in proceedings on the merits.

A basis in tort: Articles 1240 and 1241 of the Civil Code

No specific statute governs unfair competition. It is built on the general law of civil liability. Article 1240 of the Civil Code requires anyone who causes damage through fault to make good that damage. Article 1241 extends this obligation to negligence and carelessness. The victim must therefore prove three elements: a fault, a loss and a causal link.

This basis in tort distinguishes unfair competition from restrictive practices. Article L442-1 of the French Commercial Code (Code de commerce) penalises significant imbalance and the abrupt termination of commercial relationships. The two regimes can be combined depending on the facts. Our team characterises the conduct precisely in order to choose the appropriate legal basis. Every situation is different and calls for rigorous analysis.

The four categories of unfair competition in France

Case law has identified four main categories of unfair conduct. Each follows its own logic and requires suitable evidence. These categories are not mutually exclusive: a single dispute can combine several of them.

Disparagement

Disparagement (dénigrement) consists in discrediting a competitor, its products or its services. It aims to divert customers through pejorative statements. It differs from defamation (in French), which protects a person’s honour. Disparagement concerns economic activity and falls under tort liability. The public dissemination of derogatory information constitutes the fault.

Disruption

Disruption (désorganisation) covers acts that disturb a competitor’s operations. It includes the mass poaching of employees, the diversion of customers or the disclosure of trade secrets. Disruption of the business is distinct from disruption of the market. Proof rests on precise facts and a direct link with the harm suffered.

Poaching is not wrongful in itself, because freedom to work prevails. It becomes unfair when it is accompanied by manoeuvres, disparagement or an organised capture of know-how. A former employee taking customer files illustrates this abuse. The judge assesses the intention to cause harm and the extent of the disruption. Characterising the conduct requires a careful analysis of the circumstances.

Confusion and imitation

Confusion arises from imitating a competitor’s distinctive signs. It aims to create a risk of mistake in the minds of customers. Copying a trade name, a shop sign, packaging or a website: imitation diverts the value of another business. The judge assesses the risk of confusion on the basis of the overall impression. This category protects the economic identity of the business.

Confusion differs from trade mark infringement, which requires a registered exclusive right. The unfair competition action protects elements not protected by a registered right, such as a trade name or a commercial get-up. The two actions can be brought together where the facts justify it. Combining them often strengthens the victim’s position. Precise characterisation determines whether each claim is admissible.

Parasitism

Parasitism (parasitisme) consists in following in another’s wake to benefit from its efforts and reputation, without paying anything. It requires neither a risk of confusion nor direct competition. This category is covered in detail on our page dedicated to parasitic competition. There you will find the criteria and the evidence required for parasitism.

Proving the fault and the loss

The burden of proof lies with the victim. It must establish the fault with concrete evidence: official reports drawn up by a commissaire de justice (judicial officer), dated screenshots, witness statements, written exchanges. The loss is shown by a fall in turnover, a loss of customers or damage to image. Case law nevertheless accepts that commercial harm necessarily follows from an act of unfair competition.

Building the body of evidence determines the success of the action. A report made according to the rules significantly strengthens the victim’s position. We organise this evidence-gathering from the first warning signs. A hasty action based on weak evidence often backfires on the claimant.

Remedies: urgent interim relief and damages

The victim has two main levers. Urgent interim proceedings (référé) make it possible to obtain, as a matter of urgency, an end to a manifestly unlawful disturbance. The judge can order the removal of content, the prohibition of conduct or an interim payment. This fast track limits the aggravation of the loss while proceedings are pending.

The action on the merits seeks full compensation for the damage. The court awards damages assessed according to the economic and non-pecuniary loss. It can order the publication of the decision and prohibition measures subject to a periodic penalty payment. Our team combines these measures according to the urgency and scale of the dispute. For businesses, the interplay with company law sometimes deserves an overall review.

How unfair competition interacts with restrictive practices

Unfair competition is distinct from restrictive competition practices. Article L442-1 of the Commercial Code penalises significant imbalance and the abrupt termination of an established commercial relationship. This regime is governed by specific texts and designated courts. The same conduct can fall under both legal bases depending on the facts. The choice of characterisation shapes the entire procedural strategy and the amount claimed.

The role of an unfair competition lawyer

The lawyer characterises the facts, chooses the legal basis and builds the evidence strategy. The lawyer acts for the victim as claimant or for the accused business as defendant. The lawyer negotiates an amicable solution when the client’s interest calls for it. In litigation, the lawyer brings the case before the Commercial Court (tribunal de commerce) or the Civil Court (tribunal judiciaire). Each case calls for a response tailored to its circumstances.

Frequently asked questions

What is the legal basis for an unfair competition claim in France?

The action rests on tort liability under Articles 1240 and 1241 of the Civil Code. No specific statute defines unfair competition. The victim must prove a fault, a loss and a causal link. Case law has defined unfair conduct over the course of its decisions.

What is the difference between unfair competition and parasitism?

Parasitism is one of the four categories of unfair competition. It consists in benefiting from another’s efforts and reputation without direct competition or a risk of confusion. The other categories are disparagement, disruption and confusion. Our page dedicated to parasitic competition describes this conduct in detail.

Can you take urgent action against an unfair competitor?

Yes. Urgent interim proceedings (référé) make it possible to stop a manifestly unlawful disturbance quickly. The judge can order the removal of content or the prohibition of conduct subject to a periodic penalty payment. This route requires solid evidence and proven urgency. It then ties in with an action on the merits for compensation.

How do you prove the loss suffered?

The loss is shown by a fall in turnover, a loss of customers or damage to image. Case law accepts that commercial harm necessarily follows from an unfair act. Reports by a commissaire de justice (judicial officer), witness statements and accounting documents strengthen the assessment. A complete body of evidence determines the compensation.

Official sources

• Article 1240 of the French Civil Code, liability for one’s own acts: Légifrance (in French)
• Article 1241 of the French Civil Code, negligence and carelessness: Légifrance (in French)
• Article L442-1 of the French Commercial Code, restrictive competition practices: Légifrance (in French)

Law as verified on 5 October 2026. This content provides general information and does not constitute legal advice. Every situation is different: contact our team to assess your unfair competition claim.