Recognised work. For our clients.

Best Lawyers Germany 2024 – Information Technology Law

Best Lawyers Germany 2024 – Biotechnology Law, Life Sciences Practice, Health Care Law and Regulatory Practice

Peter von Czettritz is listed in “Biotechnology Law and Life Sciences Practice“, “Health Care Law“, “Pharmaceuticals Law and Regulatory Practice.”

Jan Peter Heidenreich and Daniel Hoppe are also listed in “Pharmaceuticals Law”.

IAM Strategy 300 Global Leaders 2024

JUVE Handbook Commercial Law Firms 2023/2024

Preu Bohlig & Partner is mentioned in the categories “Patent Litigation/Lawyers”, “Trade Mark and Design Law”, “Competition Law”, as well as in the healthcare sector: “Pharmaceutical and Medical Device Law”

Often recommended“ in the field of patent litigation: 

Prof. Dr. Christian Donle, Dr. Christian Kau, Daniel Hoppe und Dr. Axel Oldekop

Often recommended“ in the field of trade mark and design law, competition law:

Dr. Jan Peter Heidenreich, Dr. Torben Düsing, Dr. Axel Oldekop und Dr. Alexander Bayer

Often recommended“ in the field of healthcare: Pharmaceutical and medical device law: Peter von Czettritz


Legal 500 Germany 2023 – Healthcare

Industry focus – Health
Healthcare advertising law TIER 1
Health TIER 3

With Alexander Meier and practice group head Peter von Czettritz in Munich, Preu Bohlig & Partner covers all areas of pharmaceutical, competition and cosmetics law that are subsequently requested by pharmaceutical and medical device companies; with Daniel Hoppe in Hamburg, this is supplemented by patent law expertise. This team regularly advises on the authorisation, development and marketing of pharmaceuticals – Maier has particular expertise in the area of orphan drugs – as well as on product liability and compliance issues. Von Czettritz is also experienced in third-party opposition proceedings.

“Hall of Fame”
Peter von Czettritz

Head of practice:
Peter von Czettritz

Other core lawyers:

Daniel Hoppe; Tanja Strelow; Stephanie Thewes and Jan Peter Heidenreich


“Knowledge and experience in the field of pharmaceutical marketing authorisations.”

“The law firm is characterised by great competence, flexibility and practical relevance.”

Legal 500 Germany 2023 – Patent Litigation: Solicitors

Preu Bohlig & Partner‘s advisory focus is based on the four core sectors of healthcare, automotive, telecommunications and heavy and precision mechanics; the team has recently been increasingly mandated in healthcare and automotive in particular, in the latter case often in connection with telecommunications and in the context of connected cars. Berlin-based Christian Donle (SEP-related infringement and validity proceedings as well as combating product piracy), Daniel Hoppe (pharmaceuticals) in Hamburg, Christian Kau (automotive, precision mechanics and medical technology) in Düsseldorf and Ludwig von Zumbusch (employee invention law and licence agreement law) in Munich are regarded as the main contacts and respective office heads; at the southern German office, Axel Oldekop is also an experienced contact for companies in the automotive, communications and laser electronics sectors. The Paris office is headed by Konstantin Schallmoser, who is increasingly active in Franco-German mandates.

Practice heads:

Christian Donle; Daniel Hoppe; Christian Kau

Other core lawyers:

Andreas Haberl; Axel Oldekop; Alexander Harguth; Matthias Hülsewig


‘The law firm is characterised by high professional competence combined with uncomplicated cooperation. Even with complex problems, the lawyers endeavour to find solutions or suggest interesting approaches.’

‘Christian Kau is characterised by a high level of expertise and, in particular, by the fact that, as an attorney-at-law, he is very good at understanding complex technical issues. This makes working with patent attorneys and clients much easier, especially in the patent area.’

‘Strategic conduct of proceedings. Excellent legal expertise.’

‘Christian Donle: Outstanding knowledge and experience in IP. Penetrates the most complex legal problems. Excellent strategic litigation. Better to have him on your side.’

‘Highest competence and maximum efficiency in the prosecution of IP rights use and infringements; also in legal support for licence negotiations, evaluation of existing and drafting of new licence agreements. I regard Preu Bohlig und Partner and Christian Kau in particular as the absolute “Premiere League in IP”.’

‘Fast and thorough processing; good cooperation, especially high availability of the attorneys; good technical understanding, especially in the cooperation with patent attorneys and the technical departments’

‘Very good cooperation and ability to familiarise oneself in detail with complicated issues in technical patent law. Good skills and overview of the overall situation.’

‘Axel Oldekop: confident demeanour, unerring consideration of opportunities and risks, easy to reach, reliable preparatory work, intuitive recognition of the issues with excellent legal classification of the facts, partnership-based cooperation, excellent guide through the various steps in the process, high level of commitment, honesty’.

Legal 500 Germany 2023 – Unfair Competition

Preu Bohlig & Partner has extensive experience in advising on advertising measures, licence and distribution agreements as well as antitrust issues and is also adept at representing clients in court, for example in product piracy cases. Integrated into the firm’s soft IP practice, the interfaces to trade mark, design and copyright law are also seamlessly covered. The seven-strong practice head team is spread across three offices: Andreas Haberl (licence agreements), Ludwig von Zumbusch (know-how protection and licence agreement law), Astrid Gérard (trademark law) operates from Munich, Torben Düsing (therapeutic products advertising law) and Matthias Hülsewig (technology sector) are based in Düsseldorf, while Christian Donle, who focuses on litigation, is the contact person in the Berlin office.

Practice heads:

Astrid Gérard; Andreas Haberl; Ludwig von Zumbusch; Christian Donle; Torben Düsing; Matthias Hülsewig

Other core lawyers:

Daniel Hoppe; Jan Peter Heidenreich, Alexander Bayer


Legal 500 Germany 2023 – Trademark

Preu Bohlig & Partner offers clients support in official and court proceedings as well as comprehensive advice on filing strategies and portfolio management. Trade mark, copyright and competition lawyer Alexander Bayer specialises in the areas of software and information technologies and advises clients on contract negotiations and litigation. Christian Donle specialises in the entire spectrum of intellectual property law, with product piracy and dispute resolution playing a special role in his practice. Licence and development agreements and transactional IP advice are part of Andreas Haberl’s portfolio, while Astrid Gérard assists clients with their filing strategy and in infringement proceedings. Torben Düsing has particular expertise at the interface with media law.

Other core attorneys:

Jan Peter Heidenreich; Astrid Gérard; Ludwig von Zumbusch; Christian Donle; Torben Düsing ; Alexander Bayer; Andreas Haberl


“Working with Preu Bohlig is always reliable, fast and, above all, competent. The interests of the client always take centre stage and are fully taken into account.”

“Torben Düsing always advises competently and successfully.”

“Torben Düsing: A capable lawyer whose commitment and knowledge in his field are far-reaching and whose client-orientation is outstanding.”

“Very entrepreneurial thinking and acting.”

“Torben Düsing impresses with his targeted work and good network thinking.”

“Deutschlands Beste Anwälte 2023” – Handelsblatt Rating in Zusammenarbeit mit dem US-Verlag Best Lawyers

Deutschlands Beste Anwälte 2023

Peter von Czettritz is named in Biotechnology and Healthcare Law as well as Pharmaceutical Law.

In Intellectual Property Law are named

Andreas Haberl, Dr. Axel Oldekop, Konstantin Schallmoser LL.M., Dr. Ludwig von Zumbusch, Prof. Dr. Christian Donle, Daniel Hoppe and Carl-Alexander Dinges.

Dr. Christian Kau is named in Technology Law.

Dr. Torben Düsing is named in Media and Copyright Law.

Who’s Who Legal Germany 2023

Preu Bohlig & Partner is listed at Who’s Who Legal Germany 2023.

Peter von Czettritz in „Life Sciences“ – “Life Sciences” – Thought Leader

Astrid Gérard, LL.M. in „Trademarks“ – Recommended

Prof. Dr. Christian Donle and Dr. Axel Oldekop in „IP – Patents“ – Recommended

Who’s Who Legal Germany 2023

The Trademark Lawyer Magazine 2023

JUVE Patent: Rankings Germany 2023

JUVE Comment

With its renowned litigation practice spanning a wide range of technical fields, this IP firm is among those challenging the market leaders. Largely thanks to its outstanding contacts among pure patent attorney firms, Preu Bohlig is especially well established among large SMEs, which entrust the team with their high-stakes cases involving mechanics and electronics patents. This broad client base gives the partners a wealth of experience in a wide variety of technical sectors. At the same time, the litigation experts are called on time and again for pharma and mobile communications suits and are fighting on behalf of Stada subsidiary Aliud Pharma in the large-scale dispute over Bayer’s cancer drug Nexavar and for Huawei against various NPEs over SEPs. However, the team is not active in the latest lawsuits that Huawei filed over their own mobile phone and wifi 6 patents.

Strategic advice to pharma companies is also on the increase. Here, clients benefit from the firm’s well-established expertise in regulatory pharma law, which allows it to provide all-round advice – on the market launch and licensing of products or on licence agreements, for instance. Preu Bohlig also provides patent advice on the interface with the protection of trade secrets and expanded this area of expertise by hiring a former public prosecutor as of counsel. He specialises in the criminal law aspects of the protection of trade secrets in IP.


Litigation with a broad technical spectrum, including SEP and FRAND claims.

European set-up

The German IP firm with strong roots among SMEs opened its own Paris office a few years ago, through which it acquires and advises French clients. An unusual investment, but one that has so far paid off. Lawyers from Paris and Munich, for example, advised French client Girard Sudron in the dispute against Liquidleds. It was also a Munich-Paris team that filed a UPC claim for core client Fives against a competitor at the Hamburg local division.

Preu Bohlig also frequently cooperates with numerous foreign firms within non-exclusive relationships. Because of its client structure, however, the firm has so far only been active for Huawei in important cross-border cases. With well-established offices also in Düsseldorf and Hamburg, Preu Bohlig is present at all important UPC venues except The Hague and Milan.

Recommended individuals

Christian Donle, Daniel Hoppe (“very entrepreneurial”, “unbeaten in creativity in application of law, would entrust him even with hopeless cases”, competitors), Christian Kau, Axel Oldekop (“technically adept”, “very good with regards to content”, competitors).


Very strong focus on IP. Alongside patents, also trademarks and unfair competition and pharma law. Litigation predominates. Invention law, know-how protection, licensing and R&D contracts.

IAM Patent 1000 – 2023

Recommended – Firms: transactions

Silver – Firms: infringement

“With four offices across Germany and 20 dedicated patent professionals, Preu Bohlig delivers comprehensive IP services – particularly for names in pharmaceuticals and the automotive/telecom nexus. Known for its compelling and technically astute litigation prowess, the ensemble has also built up regulatory teams to assist its clients with their trickiest IP-rich transactional problems. The office heads are Christian Donle in Berlin, Christian Kau in Dusseldorf, Alexander Harguth in Munich and Daniel Hoppe in Hamburg. Donle is known among his peers as an “extremely strong and competent litigator”. Fierce and tenacious, he is particularly taken up with the firm’s representation of Huawei – either as defendant or intervener – in close to 40 patent litigation matters. “Christian Kau does an outstanding job enforcing his clients’ patents and securing licence agreements. When formulating the licence contracts, he always manages to keep the atmosphere friendly and constructive without losing focus. He has been very effective; in every project, potential customers have agreed to sign licence contacts. Christian quickly understands in depth complex technical subjects and licensing situations, and he can communicate the matters clearly. He always knows the appropriate counter-proposal in negotiations to secure the other side’s assent. In communications with patrons, the response time of Christian and his firm is absolutely excellent and leaves nothing to be desired. Preu Bohlig and especially Dr Christian Kau are the premier choice in IP, especially in effectively settling IP conflicts and formulating licence contracts.” Telecoms specialist Harguth has been working in intellectual property for more than 25 years. He has extensive experience in the management and coordination of complex, cross-border patent infringement proceedings. One high-profile client is Hewlett Packard Enterprise, which has been sued by WSOU Investments, a non-practising entity (NPE), for infringing patents relating to various aspects of network security and online traffic management. A similar matter occupies his advice to network intelligence company Sandvine, which has also been targeted by an NPE alleging patent infringement. Another patron is lighting company Girard Sudron, whom he represents at the Karlsruhe Court of Appeal, in a matter relating to patents for LED chips. “Daniel is a good IP strategist and an excellent litigator. He is commercially oriented and understands clients’ needs quickly. He is intelligent, approachable, highly skilled and provides prompt responses to any queries. Daniel combines his extensive experience in pharmaceutical IP matters and litigation skills in a very effective and pragmatic way.” Hoppe has expertise in the field of trade secrets – he and colleague Axel Oldekop are co-authoring a book on the subject. Oldekop has over 20 years’ experience in the patent profession and is regularly called on for the coordination of parallel infringement and validity proceedings. He takes on matters across a range of technical fields – he represents Ansorg GmbH, a leader in the aisle zone lighting space, in the enforcement of its patents against Swedish company ITAB; he works alongside Harguth for G&B Fissaggi Srl in an infringement proceeding related to dowel patents; he and Kau are suing Miele for infringing the patents of client BORA Vertriebs relating to downdraft systems. Based in Munich, Andreas Haberl has expertise across the contentious and non-contentious patent practices. A skilled negotiator and licence agreement overseer, his enforcement experience ensures that every transaction he works on is keyed to potential litigation down the road. On the contentious front, he has brought patent infringement proceedings for 4Inno Ingenieurgesellschaft before Philips and its subsidiaries. The subject matter of the patent is the control of the colour and brightness of LEDs via a control device such as an app on a smartphone. With Kau, he is also representing WashTec in a dispute against Spanish competitor Istobal involving patents relating to rim-washing components for use in car washes. Matthias Hülsewig has been in the profession for 13 years. He has built up significant expertise litigating standard-essential patents and disputes related to FRAND licences. With Kau, he represented ATT AutomotiveThermoTech GmbH in an extensive patent infringement case against Renault. The nine-patent case relates to technology in cooling passenger car engines. The parties settled at the end of 2021.”

Preu Bohlig & Partner – Patent 1000 – IAM (

Focus Spezial 2023 – Deutschlands Top-Anwälte 2023

Preu Bohlig & Partner is one of the top commercial law firms in Germany.

Partner for the survey
FOCUS develops the methodology for the survey of the top list together with its research partner FactField. The Munich-based company is responsible for the database, conducts the survey, analyzes the data and delivers the processed results to FOCUS.

We were named in Patent and Trademark law as well as in Healthcare / Pharmacy.

Best Lawyers Germany 2024 – Law Firm of the Year – Pharmaceuticals Law

Preu Bohlig & Partner was honored by Best Lawyers® with a Law Firm of the Year 2024 award in the area of “Pharmaceuticals Law“.

Best Lawyers Germany 2024 – Media Law

Dr. Torben Düsing is listed in “Best Lawyers Germany: Ones to Watch 2024 – Media Law“.

Preu Bohlig & Partner – Germany Firm | Best Lawyers

Leaders League 2023 Germany – Best Law Firms for Healthcare, Pharmaceuticals & Biotech

Leaders League 2023 Germany – Mergers & acquisitions – Small & mid-cap transactions

Preu Bohlig & Partner is listed in the category “Recommended” in Mergers & acquisitions – Small & mid-cap transactions.

Managing IP – The Top 250 Women in IP 2023

Astrid Gérard is one of 250 women named in this year’s Managing IP ranking: This special publication recognizes some of the senior female IP practitioners in private practice who have performed exceptionally for their clients and firms in the past year.

Chambers Europe 2023 – “Healthcare & Life Sciences”

What the team is known for

Preu Bohlig & Partner has a compact life sciences practice with a following of long-standing clients in the pharmaceutical sector. It represents clients in injunction and enforcement proceedings. The team has further experience in handling liability disputes. It offers assistance with advertising and product classifications. In addition to being recognised for its regulatory knowledge, the practice is also known for covering patent protection and disputes in the life sciences sector.


„In addition to regulatory and contractual law, they also stand out for their strength in the project management of mandates.“

„For global topics, Preu Bohlig have the advantage of having a large network of partner boutique firms and then also support the coordination. It is very practical.“

Notable practitioners

Peter von Czettritz is well known in the market for the provision of regulatory advice on marketing, intellectual property and competition law. His experience includes assisting with digital health and patent issues. He is also highly active on contentious mandates, including seminal and precedent-setting cases, such as in the demarcation between medical devices and medical products, before German and EU courts.

„I have very good experience working with Peter von Czettritz of Preu Bohlig & Partner.“

Chambers Europe 2023 – Patent Litigation

What the team is known for

Preu Bohlig is well known for expertise in patent litigation, regularly acting for clients from the technology, manufacturing and life sciences sectors. It represents clients in patent infringement and parallel validity proceedings and further advises on employee invention disputes. The law firm is active for both claimants and defendants. Additionally, Preu Bohlig advises pharmaceutical clients on patent questions relating to market launches of new products.


„The law firm effectively deals with reviewing and summarising complex litigation.“

The team works very thoroughly and quickly. All questions can be answered very promptly.“

„Preu Bohlig & Partner grasps the legal issues and reports them in a way that demonstrates an understanding of the client’s commercial objectives.“

Work highlights

Preu Bohlig & Partner advised Huawei in a large number of patent infringement cases related to SEPs.

Notable practitioners

Andreas Haberl  regularly handles patent infringements on behalf of clients from the manufacturing and biotechnology sectors. He also possesses experience dealing with patent ownership claims.
Christian Donle has a notable presence in the patent litigation field and carries out a substantial caseload of infringement proceedings, including SEP matters. He is also active in patent vindication proceedings.

The Patent Lawyer Magazine 2022

The Patent Lawyer
Award winning firm 2022 – Germany

World Trademark Review – WTR 1000

A potent force on the German trademark scene – with the ability to advise on everything from international filing strategies to disputes before the trademark offices and courts and licensing and contractual matters – Preu Bohlig has grown even further in stature over the past 12 months following the arrival of Jan Peter Heidenreich. The former Harmsen Utescher litigator shines in trademark suits, but also plays a hand in unfair competition disputes and the negotiation of distribution and licensing agreements. He brought with him an enviable list of clients, adding to the litany of names – diverse both in nature and in size – that rely on the firm to defend their rights. Alongside Heidenreich is veteran expert Astrid Gérard; whipping vast trademark portfolios into shape, fighting in infringement proceedings and drawing up watertight licensing and delimitation agreements all come naturally toher.

LMG Life Sciences Awards 2021 – Europe

Preu Bohlig & Partner

National Firm of the Year in Life Sciences

Media Law International

MLI – Media Law International

Specialist Guide to the Global Leaders in Media Law Practice

Preu Bohlig is widely praised by clients who note “Other than the typical situation of lawyers playing your friend and then sending huge bills, Preu Bohlig only takes your case if you are on the right side of the case.” The media practice is focussed on press and entertainment law. The team regularly advises on defamation, copyright and competition law. Other areas of focus include film, television, theatre and advertising.

Best Lawyers 2021 – Lawyer of the Year

Dr. Christian Kau is listed as “Best Lawyer of the Year in Technology Law”

Expert Guides Patents

Expert Guides Patents

The World’s leading lawyers chosen by their peers
Andreas Haberl und Dr. Alexander Harguth sind gelistet in der Kategorie “Patents” in Deutschland

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