
Dr. Jan Philipp Book
- Your Lawyer for Criminal Law and Commercial Criminal Law

As a specialist lawyer in criminal law, I support you in all criminal law matters.
Your Criminal Defence Lawyer – Clear, Precise, Committed
I defend you against criminal allegations at every stage of the proceedings. My practice focuses on commercial criminal law. For over 10 years, I have worked exclusively in criminal law, developing solutions precisely tailored to your case.
Commercial Criminal Law
Commercial criminal law forms a key focus of my practice. It encompasses a wide range of offences, including fraud, breach of trust, competition law offences, and corruption offences – often in connection with business activities. The legal framework continues to expand, as legislators repeatedly tighten it.
Criminal Tax Law
Criminal tax law is a particularly complex area of law. The tax obligations of private individuals and, in particular, companies are becoming increasingly far-reaching. Tax issues are often linked to criminal allegations, which are regularly directed against managing directors.
Insolvency Criminal Law
Almost every insolvency of a company is accompanied by criminal allegations: these range from delay in filing for insolvency (§ 15a InsO) and bankruptcy offences (in particular § 283 StGB) to allegations of breach of trust. Defence in insolvency criminal law requires not only criminal law expertise but also in-depth knowledge of insolvency law.
Money Laundering
Hardly any area of criminal law has been tightened as much in recent years as the criminal provision on money laundering under § 261 of the German Criminal Code (StGB). The legislator has significantly expanded criminal liability. The number of suspicious activity reports, particularly by banks, has also risen sharply in recent times, as has the number of investigations initiated on this basis.


Strong Defence in Commercial Criminal Law!
Defence in commercial criminal law requires clear analysis and carefully considered strategic decisions – always with the best possible outcome in sight.
Expertise in Specialised Areas of Law
I deliberately focus on specialised areas of criminal law. I am regularly engaged in commercial criminal law through lectures, advanced trainings, and publications.
Individual Client Support
Every case has its own dynamic. I provide each client with personal and individual attention. Communication is always direct and efficient, because I know that criminal charges are always a burden for those affected.
Digital Work Environment
I use modern technologies in handling cases, especially to ensure fast communication with my clients. My work is conducted almost entirely digitally.
Dr. Jan Philipp Book – Specialist Lawyer for Criminal Law
I have been working exclusively as a criminal defence lawyer since 2012. In 2016, I became a specialist lawyer for criminal law.
My specialisation lies in commercial criminal law. I focus on reducing allegations to their legal core and countering them at the very points where they lack a legal or factual foundation. Particularly in commercial criminal law, my approach is to decisively oppose the investigative hypothesis of the authorities.

Let Us Discuss Your Case
Especially in commercial criminal law, it is advisable to begin the defence as early as possible. I invite you to arrange an appointment for a personal consultation or to contact me directly.

Dr. Jan Philipp Book – Specialist Lawyer for Criminal Law
Strong Criminal Defence for Your Case
There are no one-size-fits-all solutions in criminal law. Whether you are a managing director confronted with criminal allegations or a self-employed professional in need of assistance in criminal tax law, my goal is always to minimise any burden as much as possible.
Managing Directors and Executives
The managing director is always at the centre of attention, including in criminal law matters. Criminal allegations are often directed against managing directors at an early stage, even where they have had no personal involvement in many of the underlying issues. These situations can vary widely, ranging from allegations of tax offences to allegations concerning social security contributions.
Self-Employed Professionals and Entrepreneurs
My clients regularly include self-employed professionals such as doctors, lawyers, and tax advisors, as well as business owners, whether allegations arise in connection with billing, alleged treatment errors, or investigations relating to tax offences.
Private Individuals and Companies
Criminal allegations can affect anyone, in many different areas of life. I stand by my clients in all fields of criminal law. Companies are also frequently involved in criminal proceedings, whether as complainants or as parties in confiscation proceedings.
Your Questions Answered
Many questions are asked repeatedly by clients, especially at the beginning of a case. Below you will find answers to some key points. Further information can be found in my specialist articles.
					 What should I do if I am confronted with criminal allegations? 
							
			
			
		
						
				The first rule is: exercise your right to remain silent. Do not make any statements. Contact a specialised criminal defence lawyer immediately to discuss the next steps.
					 What should I do if I receive a summons? 
							
			
			
		
						
				Many criminal investigations begin with a summons for questioning as a suspect. You have the right to remain silent – make use of it and contact a specialist lawyer in criminal law.
					 What are the first steps if I am facing a criminal allegation? 
							
			
			
		
						
				The first step is a thorough review of the allegations and your individual situation. It is important that we speak at an early stage, as a detailed analysis usually requires access to the investigation file. Once I have access to it, I can determine precisely which allegations have been raised and on what evidence they are based.
					 How does a criminal law consultation with you proceed? 
							
			
			
		
						
				We will discuss your case in an initial consultation. In many cases, this already allows for a risk assessment. However, a more thorough analysis requires access to the case file.
					 Can I consult you at any stage of the proceedings? 
							
			
			
		
						
				Yes. I represent clients at all stages of criminal proceedings, from the initial suspicion to the appeal proceedings. I do not represent clients in matters relating to the enforcement of sentences, but will be happy to refer you to specialized colleagues. I advise and support companies and private individuals in filing criminal complaints.
					 What will it cost? 
							
			
			
		
						
				The fees are agreed on an individual basis, as each case is different. In most cases, billing is based on time spent. I will be happy to give you an estimate of the expected costs right at the beginning. Please feel free to raise this, as transparency is important to me.
					 What options are available for discontinuing a criminal investigation? 
							
			
			
		
						
				The Code of Criminal Procedure provides for a number of options for discontinuation. These are each tied to different conditions, such as the payment of a monetary fine. This can be a legitimate defence objective, particularly in commercial criminal law but also in other areas.
					 How should I prepare for the first consultation? 
							
			
			
		
						
				Do You Have Any Further Questions? I’m Here For You!
If you have any further questions, please do not hesitate to contact me. The sooner we focus on your defence, the better.
Specialist Articles on Criminal Law and Commercial Criminal Law
In the Insights section, I provide regular analyses and commentary on current criminal law issues. I highlight key decisions, particularly those of the Federal Court of Justice, along with legislative initiatives and developments in commercial criminal law, criminal tax law, and insolvency criminal law.
- Wirtschaftsstrafrecht
- Geldwäsche
- Insolvenzstrafrecht



