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International Dispute Resolution Law Firm

Our trusted team is experienced in all forms of dispute resolution, including litigation, arbitration, corporate crime and regulatory investigations, mediation, alternative dispute resolution, judicial review and reputation management, as well as in-house advocacy.

There are two sides to every dispute and we have proven experience of your perspective. Whatever business you are in, resolving disputes is a fact of life. When facing serious allegations, knowing you have experienced and pragmatic advisers on your side is the first step towards a successful resolution.

With our extensive European footprint, we are particularly adept at putting together large cross-departmental teams to handle multijurisdictional disputes.

Our record of success in even the most complex international disputes reflects our investment in, and commitment to, excellence and innovation. It is this commitment that helps us deliver winning work at a realistic and proportionate cost.

Litigation

We can assist you in all types of litigation, including contract law, commercial law, corporate law, litigation concerning any form of liability, financial law, construction law, healthcare law, environmental law, insurance law, civil enforcement procedures, criminal business law, criminal tax law, media law and family law.

With extensive experience in dispute resolution, we can support you at every stage of litigation:

  • Risk analysis
  • Pre-litigation process
  • Defining a legal strategy
  • Emergency or preventive procedures
  • Representation before national courts and arbitral tribunals
  • Amicable settlement
  • Enforcement of court decisions and arbitral awards

Domestic and International Arbitration

Our cross-jurisdictional arbitration practice comprises over 100 partners and 400 fee-earners conducting multi-billion dollar commercial and investor-state arbitrations. We operate from all the major venues for international arbitration including London, Paris, Madrid, Hong Kong, Singapore and Dubai, as well as across Central and Eastern Europe, Africa and Latin America. We represent clients under the rules of the world’s leading arbitral institutions including:

  • ICC
  • LCIA
  • CIETAC
  • ICSID
  • WIPO
  • SIAC
  • HKIAC

Many of our partners are regularly appointed as arbitrators, and we speak and write regularly on matters of interest in the arbitration world. In many cases we will conduct advocacy in arbitrations.

Risk & Investigations

Our specialist teams advise on compliance, investigations and claims, from the development and improvement of compliance controls and systems (including embedding those procedures into the corporate culture), through to investigating issues when they go wrong and defending clients before regulators, prosecutors and in civil proceedings arising from the same issues.

Our team spans a number of key practice areas, including financial crime, employment, financial services enforcement, competition, data protection, health and safety, environment, sanctions and professional and clinical risks. Through CMS' extensive global network, we can also provide you with seamless advice on cross-border issues.

Innovative solutions

Unlike many firms, CMS has its own in-house team to fully support our evidence collection, review and disclosure technology, CMS Evidence. Recently awarded ‘Best eDiscovery Team’, the team is not only one of the largest of any major law firm, but also one of the few that is fully certified to industry standard. By not outsourcing this service, clients save critical time in the early stages of a dispute or investigation, because there is no need to bring external suppliers up to speed.

Choose area

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ESG Litigation
Environmental, social and governance (ESG) criteria are at the forefront of corporate strategies due to investor, customer and regulator expectations.
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Cross-border Litigation
CMS’s Litigation practice is truly global, with more than 1200 dispute resolution lawyers in 74 offices in 45 countries spread across Europe, Mi
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European Class Actions
CMS' leading class action team and unparalleled European structure develops and implements cohesive defence strategies for cross border cases.Class ac
International Arbitration
Our International Arbitration team is one of the largest of any law firm and spans the globe, comprising a diverse range of specialists, with a sector
Changing Tech Changing Risks
Technology Disputes
CMS’s international Technology Disputes team advises clients on all types of technology-related disputes across all our jurisdictions.Our work i

Contact

Portrait ofZsolt Okányi
Dr. Zsolt Okányi
Partner
Budapest

How can we help your business?

Our team of experienced dispute resolution lawyers is here to help you navigate through any legal challenges your business may be facing.

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12/09/2023
CMS European Class Actions Report 2023
Data-driven insights into class action risk across Europe, a key concern for major corporates
28/06/2022
Technology Transformation: Managing Risks in a Changing Landscape
Changing tech, changing risks
International Disputes Digest
Analysis and commentary on global dispute resolution trends

Feed

17/04/2024
APP fraud – Quincecare duty claims against banks replaced by new “retrieval...
The recent decision in CCP Graduate School Ltd v National Westminster Bank plc and another [2024] EWHC 581 (KB), demonstrates how Claimants are repositioning claims against banks arising from authorised...
15/04/2024
Fundamentally dishonest claimant’s claim dismissed: s.57 of the Criminal...
In Kirsty Williams- Henry v Associated British Ports Holdings Ltd [2024] EWHC 806 (KB), a claimant who had sustained serious injuries following her fall from a pier in 2018 had her claim dismissed because...
15/04/2024
Green/sus­tain­ab­il­ity claims and advertising and consumer greenwashing
In the era of increased environmental awareness, the spotlight on green claims has never been more intense. As consumers are concerned about global heating and ecological sustainability, they are scrutinizing products like never before, seeking eco-friendly options that align with their values. In response, businesses have responded to this concern and consumers’ purchase interest, with brand-owners increasingly highlighting the benign or even beneficial effects their products and services have on the environment fostering a surge in green marketing initiatives. Yet, amidst this push for sustainability, the risk of being accused of greenwashing is omnipresent. As environmental characteristics of products and services are highly technical and the understanding of the various concepts involved is continuously changing, en­vir­on­ment­al/sus­tain­ab­il­ity claims raise a significant risk of confusing and misleading consumers. Many companies have fallen foul of advertising standards in this area recently. Given the high sensitivity of environmental claims and the reputational damage that can result from allegations of greenwashing, it is particularly important to make sure environmental claims are compliant. By ensuring truthful, accurate and unambiguous information is always given to the consumers, companies can avoid the risks and build a reputation for authenticity in their sustainability advertising and communications. CMS guides companies through the maze of regulations and case law and advise on the steps a company can take to ensure their advertising is not only compliant but also authentic and impactful. The priority questions we address are: Which green claims are likely to raise litigation or regulatory enforcement risks?What can businesses do to mitigate these risks?What are the likely claims/en­force­ment that could arise?Who is likely to make a claim?What are the risks in the event of a violation or a complaint? What future regulatory measures are expected and what companies have to do now to be prepared? We offer various solutions to help you be compliant and avoid accusations of greenwashing: Sustainability claim checks including regulatory risk matrix as well as litigation: evaluating the planned claims and mapping their risk as well as developing compliant marketing strategies and claims custom-tailored to your business's unique pro­file;Sus­tain­ab­il­ity-re­lated litigation: providing comprehensive support in legal disputes in the area of advertising with environmental claims;Training sessions: to empower your legal, compliance and sustainability as well as advertising teams with in-depth knowledge of sustainability risks and mitigation strategies; andBoard packs: to equip your directors/board members with actionable insights into greenwashing risks, ensuring they steer the company toward sustainable strategies with confidence and integrity.  For an initial conversation on how we can support you on greenwashing risk, please reach out to the lawyers listed on this page or to your usual CMS contact.
15/04/2024
CMS Class Actions video series
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12/04/2024
CMS ESG litigation webinar series
Global trends in climate litigation
09/04/2024
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On 31 January 2024, the Swiss Federal Council suggested a total revision of the Administrative Criminal Law Act of 22 March 1974 (ACLA) and issued a preliminary draft including an explanatory re­port.Ac­cord­ing...
08/04/2024
Ukraine discontinues War and Sanctions Portal
Following a governmental discussion on 19 March 2024, the Ukrainian government announced its decision to shut down a sanc­tions-re­lated database maintained by the National Agency on Corruption Prevention...
04/04/2024
Supreme Court ruling on the correct approach for assessing PSLA in “mixed...
In a judgment welcomed by claimants, the Supreme Court has upheld the Court of Appeal’s decision in the case of Hassam & Anor v Rabot & Anor [2023] EWCA Civ 19 in respect of the correct approach to...
03/04/2024
Register of Damage for Ukraine is open for claims submission
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02/04/2024
Green Claim and Green Litigation in Türkiye
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28/03/2024
Warning to all landlords: Perfect or suffer the consequences
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27/03/2024
Margin of error crucial in defeating negligence claim against valuer
A recent High Court judgment demonstrates the vital importance of the margin of error in claims against valuers, and the need to focus on the valuation result rather than the process.In Bratt v Jones...