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We pursue unfair competition and business malpractice effectively and sustainably.

Is your competition failing to play by the rules? This can lead to significant losses in revenue, for instance, if a competitor employs unfair tactics to induce your potential customers to purchase their goods or utilize their services instead of yours, or even poaches your existing clientele. This situation can be particularly problematic because the resulting damage may not be easily remedied or precisely quantified, for example, if your company’s reputation suffers lasting harm due to unfair advertising practices.


We assist you in pursuing violations of competition law and take decisive action against unfair conduct by your competitors. If a competitor engages in anti-competitive behavior, we will swiftly enforce your claims for injunctive relief through formal warning letters and preliminary injunctions.


This is the only way to effectively and substainably protect yourself against unfair competition, ensuring that your economic success is not jeopardized by your competitors' rule-breaking, and ultimately ensuring that everyone (not just you) plays by the rules. The costs associated with a justified warning letter or preliminary injunction must be reimbursed by the party receiving the warning. Furthermore, in cases involving fault or negligence, you may be entitled to monetary damages – claims which we will, of course, also pursue and recover on your behalf.

Received a cease-and-desist letter for unfair competition?

If you have received a warning letter yourself regarding unfair competition, misleading advertising or other forms of business malpractice, it is crucial to react promptly. Please send your warning letter to our firm via email for a no-obligation review; we will assess whether or not the conduct in question is actually unfair and defend you against any unjustified claims. We may already be familiar with your opponent.


Conversely, if you have received a warning letter from our firm, we recommend that you seek the assistance of legal counsel specializing in this field to ensure the matter is resolved as quickly and efficiently as possible.

Contact us

We offer initial consultations in competition matters at affordable and transparent fixed rates, which are credited against our fees should you decide to retain our services further.


Feel free to contact us by sending us an email or calling us at any time. We are looking forward to helping you with any issues relating to competition law and business malpractice.

Attorney at law Andreas Erlenhardt, LL.M.

Bar-certified specialist attorney for intellectual property



We do business all over Germany. Our Düsseldorf office is located within the district of the Higher Regional Court (Oberlandesgericht) of Düsseldorf, to which the following communities belong: Hilden, Langenfeld, Meerbusch, Neuss, Krefeld, Kaarst, Ratingen, Mönchengladbach, Viersen, Kempen, Wuppertal, Erkrath, Haan, Remscheid, Mettmann, Solingen, Velbert, Oberhausen, Duisburg, Mülheim, Dinslaken and Kleve – we do not have offices in these cities but only in Düsseldorf. We have advised clients who are located in Berlin, Dortmund, Bremen, Köln, Dresden, Bochum, Bonn, Gelsenkirchen, Chemnitz, Kiel, Augsburg, Koblenz, Lübeck, Leverkusen, Oldenburg, Stuttgart, Osnabrück, Paderborn, Würzburg, Ulm, Offenbach, Bottrop, Hannover, Münster, Recklinghausen, Trier, Erlangen, Jena, Reutlingen, Nürnberg, Pforzheim, Göttingen, Heilbronn, Regensburg, Ingolstadt, Darmstadt, Heidelberg, Potsdam, Leipzig, Hamm, Kassel, Saarbrücken, Mainz, Freiburg, Aachen, Braunschweig, Wiesbaden, Karlsruhe, Mannheim, Bielefeld, Essen, Frankfurt and München.