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Kanzlei Klengel

Attorney and Defense Lawyer in Frankfurt


Juergen Klengel as an attorney and defense lawyer in Frankfurt offers clients comprehensive advice on all aspects of white collar crime and tax offenses.
The Law Firm acts throughout Germany and internationally.

Economic Criminal Law

Economic criminal law is the collective term for all regulations of the core and supplementary criminal law penalizing misconduct…


Tax Criminal Law

Tax criminal law includes all laws which sanction violations of German tax laws. Depending on the nature and extent…


Corporate Compliance

Nowadays, compliance is indispensable for Companies whilst participating in economic life. Compliance encompasses strategies…


Internal Investigations

Closely related to compliance is the topic of internal investigations. Violations of law can not only result in large…


Labor Criminal Law

In the area of economic criminal law, labour criminal law is playing an increasingly important role. This legal term includes all…


Medical Criminal Law

Medical liability law and medical criminal law are “special criminal laws” for healthcare participants. Typically, this field of law…


Customs and Foreign Trade Criminal Law

Customs and foreign trade criminal law is regulated in the Foreign Trade Act (AWG) and the EU Customs Code (UZK). In these areas of law…


Media Criminal law

Media criminal law still is a young legal concept. The regulations sanctioning violations in this field of law are not covered by a single…


Banking and Capital market Criminal Law

Banks and financial services firms, executives and market participants are often in the focus of investigative and supervisory authorities…


Environmental Crime

Criminal law amendments of 1980 and 1994 to the German Criminal Code (StGB) have led to a considerable tightening and extension of…


Money Laundering

Money laundering plays a very important role in practice of criminal defense today. The current money laundering offence in accordance with…


Data Protection Criminal Law

Data protection crinimal law is becoming increasingly important due to the continuous technical development and the increasing regulation…


General Criminal Law

The general criminal law is a wide ranging area covering offences not directly related to the economic life. The sectors of the core criminal…


Witness Counseling

A witness counsel is a criminal defense lawyer that provides legal assistance to witnesses. According to the jurisdiction of the German…


International Legal Assistance

In criminal matters international legal assistance is provided by authorities especially through public prosecutors, courts and consulates…


Criminal Due Dilligence

Corporate acquisitions always entail civil and tax liability risks that can be handled contractually. However, the consequences for the company…


Construction Criminal Law

Criminal construction law encompasses criminal offences that can be committed in connection with the planning, the construction…


Criminal Liability For Products

The criminal liability for products has gained importance enormously in practice in recent years. In regular cases in this field of law a product…


Criminal Liability For Company Organs

Since a formal corporate criminal law does not yet exist in Germany, no penalties can be imposed on companies and corporations in the narrow…


Antitrust Criminal Law

Antitrust criminal law is a sub-sector of economic criminal law. It is regulated not only by the Law against Restrictions of Competition (GWB)…


Corruption Criminal Law

The corruption criminal law is a part of the economic criminal law, which is of great importance in practice. In recent decades, the focus of…


In emergency cases such as search and seizure or arrest, we are also available at night and on weekends – 24/7
+49 (0) 173 9194890

Individual Representation and Defense

Juergen Klengel’s deep and extensive knowledge in these areas is grounded in his many years of experience dealing with white collar, tax offense and bribery cases as an experienced, former public prosecutor, attorney and defense lawyer. He was a partner in a leading international law firm and headed the white collar and compliance practice for many years in Frankfurt before founding his own law firm in Frankfurt am Main.

Juergen’s first-hand enforcement and defense experience helps him to support and defend his clients in all phases of investigations, from the preliminary proceedings stage in complex national and international cases, relating to issues such as corruption, corporate espionage, missing trader fraud, price fixing, tax evasion, embezzlement, breach of trust and environmental offenses, to the appeal instance. The law firm represents and defends a large variety of company representatives such as board or supervisory board members, executive directors as well as the employees of the company or other individuals.

Juergen Klengel’s international knowledge enables him to guide individuals, companies and multiple parties through even the most complex cross-border investigations. He has a significant track record, inter alia of advising companies and clients faced with investigations by US authorities such as the Securities and Exchange Commission (SEC), the Department of Justice (DOJ) and the Office of Foreign Assets Control (OFAC). He also offers dependable advice on sanctions, embargos and defense in Foreign Corrupt Practices Act issues.

Juergen also supports the management and the company to ensure the required compliance with national and international laws and provisions and assists to implement the respective guidelines and compliance structures. He places particular emphasis on preventive advice, so that clients can avoid costly and unnecessary criminal and tax offense charges by preemptively identifying and eliminating criminal risks and culpable behavior.

Juergen Klengel is also able to offer his clients the benefit of his considerable experience in implementing and optimizing group-wide whistle-blower systems.

Corporate Representation & Corporate Defense

In recent years, companies in particular came more and more into the focus of law enforcement agencies and regulators. Companies operating on a national or international scale nowadays face an enormous increase in regulatory density and risks when doing business. That includes a large variety of business-related penal provisions as well as very strict tax and administrative obligations. The economic consequences directly caused by fines and levies, as well as the damage of the companies due to reputational damages or the exclusion from public tenders, can lead to severe financial consequences or even to an existential threat. An efficient risk minimization strongly requires tailor-made preventive advice and, in case of proceedings by law enforcement authorities or even dawn raids, the immediate involvement of an experienced economic defense lawyer as a corporate representative.

The corporate representation includes the base defense of the company to avoid fines or profit levies and in appropriate cases the internal investigation and of the facts. At the same time, Kanzlei Klengel advises on the enforcement of claims for damages or their efficient rejection and in appropriate cases assists the company in taking employment-related consequences.

In extensive proceedings, Juergen Klengel draws on a huge and well-developed national and international network of sophisticated inter- and extra-disciplinary colleagues. The law firm regularly works together with other excellent lawyers from other areas of law as well as accounting firms and tax consultants. If a parallel defense of organs or employees of the company is necessary, Kanzlei Klengel intervenes experienced defense attorneys from Frankfurt, Germany and other countries and ensures by this coordination a comprehensive and competent representation of the involved company and the individuals.

Based on his deep expertise and thorough approach, Juergen has led many internal investigations within companies on various criminal law matters. These matters were often multi-jurisdictional and related e.g. to international bribery, embezzlement or serious compliance breaches. Offering clear and pragmatic advice, Juergen also advises and represents clients seeking to recover assets lost due to criminal offenses.

The law Firm has also an extraordinary expertise and experience in the field of representation and defense in preliminary and criminal proceedings in which, in addition to the German authorities also foreign supervisory authorities or law enforcement agencies, such as the US Security and Exchange Commission (SEC), the US Department of Justice (DOJ), the UK Serious Fraud Office (SFO), the UK Financial Conduct Authority (FCA) or domestic and foreign tax authorities, are involved.

If the company has been harmed externally or by its own employees, the firm advises the management and the company on the strategic determination of the best course of action. This includes clarifying the facts and several important legal issues. Amongst other questions, it e.g. has to be decided with great care whether or not and at which point the enforcement authorities should be informed and involved actively.

Commitment & Competence

Kanzlei-Klengel in Frankfurt am Main consistently advises on the enforcement of claims for damages and restitution and identifies and secures assets already during the preliminary investigation proceedings. The law firm ensures that the public prosecutor’s office takes the necessary asset protection measures or makes use of civil court assistance to secure the enforcement of claims for damages.

Juergen Klengel advises companies also in the prevention of money laundering and corruption. Juergen, as an experienced defense lawyer in Frankfurt and former public prosecutor, represents and defends companies and their employees in all regulatory crises.

The law firm is also available to assist companies in product liability cases, industrial accidents or environmental litigation. The services of the Kanzlei-Klengel in Frankfurt am Main include inter alia:

  • Advice on the announcement or initiation of a preliminary investigation
  • Defense in preliminary proceedings, interim proceedings, in the main hearing and in appeal proceedings
  • Supervision and representation during company and house searches
  • Representation of companies in investigation and criminal proceedings and in appropriate cases exercise of the base defense of the company and ensuring and organizing the advice and defense of individuals by excellent economic defense lawyers
  • Advice and representation in connection with proceedings of German law enforcement agencies involving international law enforcement or supervisory bodies.
  • Efficient defense against corporate fines, expiry and levy measures
  • Ensuring asset-securing measures and the civil enforcement of restitution and damages claims
  • Guidance on and support of the company in regards to corporate press and public relations
  • Avoidance of reputational damage due to negative press coverage
  • Advice, representation and defense of individual clients such as board members, supervisory board members, managing directors, employees of companies as well as other defendants
  • Assisting witnesses and targets in interviews and interrogations


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