Our acclaimed lawyers have served as counsel in over two hundred international commercial, construction and investor-State arbitrations under the ICC, ICSID, UNCITRAL, LCIA, ICDR, SIAC, SCC, DIAC, HKIAC, JAMS, Swiss Rules, AAA, LCAM, LMAA, CICA, OHADA and other arbitration rules. We provide legal representation for international arbitrations under nearly all laws and have accrued an exceptional record of successes for past clients. All of our arbitration lawyers speak English and French, while our team also speaks other languages fluently including Spanish, German, Arabic, Serbo-Croat, Czech, Slovak, Greek and Russian. Our goal has always been to provide the best value for unparalleled arbitration legal representation, while tirelessly resolving every dispute in line with our clients’ interests.
William Kirtley, Managing Partner of Aceris Law, is a Franco-American Harvard-, Columbia- and Sorbonne-educated international arbitration lawyer with two decades of experience focusing on international commercial, investment and construction arbitration at the highest level. He has served as counsel or arbitrator in some of the largest arbitrations in history. He is a member of the New York and Washington Bars and an inactive French Avocat à la Cour, who was previously a member of the international arbitration practice groups of Shearman & Sterling and Salans (now Dentons). He has served as lead counsel in disputes on five continents, under the ICC, ICSID, UNCITRAL, LCIA, SCC, ICDR, SIAC, HKIAC, DIAC, CICA, LCAM, JAMS, DIFC-LCIA, AAA, AFA, Swiss Rules and other arbitration rules, winning or amicably resolving the vast majority of the numerous disputes where he has served as counsel. Recognized by the Legal 500 and Décideurs for many years, named as the “Best of the Best” in various legal awards, as well as “Who’s Who” in the field of international arbitration, clients call him a “great international arbitration lawyer” who is “incredibly smart“, “reliable, dynamic, loyal and committed to his clients“, “fair and transparent” and “a lawyer who will seek one hundred percent to guard the interests of his client“. They also call him “hard-working and highly responsive” with “depth of knowledge and experience in international dispute resolution” and “an unstoppable work ethic“. They also cite his “excellent understanding of international arbitration case law and strategy” while noting that he is “very easy and pleasant to work with” and he “never abandons a case halfway, no matter how hard a case can be“. He also serves as arbitrator under a variety of arbitration rules and is directly involved in all work of Aceris Law LLC.
Zuzana, Senior Associate at Aceris Law, is a Slovak national and Sorbonne/Assas-educated lawyer registered at the Paris Bar with more than a half decade of experience in international arbitration. Zuzana has served as counsel in high-profile commercial and construction arbitrations under the ICC, UNCITRAL, SCC, LCIA, PCA and other arbitration rules. She has represented companies and States in disputes across a broad range of industries (real estate, construction, energy, civil aviation, cryptocurrency, etc.) under French, Swiss, English, Georgian, Kazakh, Saudi, OHADA and other laws. Zuzana has represented an Eastern European State-owned company in Dispute Adjudication Board proceedings against an Indian construction company concerning a USD 15 million dispute over the construction of an OHL transmission line. She has also served as counsel for a publicly-listed company in an SCC arbitration under English law against a Dubai-based company in a dispute regarding a logistics contract involving, inter alia, issues of application of the U.S. economic sanctions through the prism of force majeure. Zuzana has also acted as counsel for a Singapore-based company in a successful ICC arbitration over a civil aviation dispute; for an Austrian company in a successful ICC arbitration against a Mauritanian company in a construction dispute; for a Kazakh company in an ICC arbitration against a Joint Venture composed of Italian and Kazakh companies concerning a road construction project; and for a Saudi company in an ICC arbitration against another Saudi company over a construction dispute in relation to a refinery project. Zuzana also represented a foreign investor in a successful multi-million dollar UNCITRAL ad hoc investment arbitration against a West African State in a judicial expropriation-related dispute. Zuzana speaks English, French, Slovak and Czech fluently and has basic knowledge of Russian.
Anastasia Tzevelekou, Associate at Aceris Law, is an arbitration lawyer based in London, experienced in both civil law and common law systems. She is admitted to the bars of England and Wales, Ireland and Greece. Anastasia has served as counsel in LCIA arbitrations under English law, notably in the steel and energy sectors. She has also served as counsel in construction disputes, including dispute board proceedings in the electricity industry. In addition, Anastasia has served as counsel in an SCC arbitration regarding a logistics contract, multiple ICC arbitrations under American law, Saudi law, Swiss law and other laws, on behalf of multinational corporations in the cryptocurrency, distribution, automotive and other sectors. She has also advised a European third-party funder on the potential acquisition of a large arbitral award against an African State and enforcement issues involving sovereigns. She has also represented a Saudi company in an LCIA arbitration under English law involving lost profits in the commodities sector. She has also served as counsel in two ICC disputes under Swiss and African laws in the technology and pharmaceutical industries and assisted an arbitrator in a DIFC-LCIA arbitration concerning an EPC contract. Anastasia holds an LL.M. in International Business Law from the London School of Economics, as well as an LL.M. in International Commercial Arbitration and a Bachelor’s Degree in Law, both from the Democritus University of Thrace in Greece, graduating in the top 1% of her class. Prior to joining Aceris, Anastasia worked at KPV Legal, a boutique firm in Athens, assisting with international arbitration cases and advising corporations in the aviation, pharmaceutical, distribution, energy and other sectors. Anastasia speaks English, French and Greek.
Alexandra Koliakou, of French and Greek nationality, is admitted to the Paris Bar. She speaks fluent French, English and Greek and has a working knowledge of Spanish. She completed her studies in France and the United Kingdom. She obtained her law degree and master’s degree from the Universities of Panthéon-Assas and Descartes. Subsequently, she focused on international dispute resolution and graduated with distinction from the LLM Program of Comparative and International Dispute Resolution at the Queen Mary University of London. Prior to joining Aceris Law, Alexandra worked in various French and international law firms, including Teynier Pic, a boutique firm specialized in international dispute resolution, and at the international arbitration department of Willkie Farr & Gallagher in Paris.
Marta Milanovic holds a Master’s degree in International Law, Foreign Trade and International Relations from ISDE in Spain, a law degree from the University of Belgrade, Serbia, and a degree in Finance and Banking from the Belgrade Banking Academy in Serbia. Of Serbian origin, Marta speaks English, Serbian, Croatian and Spanish fluently, and she has a working knowledge of French. During her studies, she also completed a Business Negotiations program at New York University in the United States. Prior to joining Aceris Law, Marta was a trainee at a boutique law firm in Barcelona.
Nina A Janković, Senior Associate at Aceris Law, holds an LLM in Public International Law from Leiden University, the Netherlands, and an LLB from Belgrade University, Serbia, graduating summa cum laude. She has considerable experience in international construction, investment and commercial arbitration. Prior to joining Aceris, Nina was a Graduate Trainee in the International Arbitration Group of Freshfields Bruckhaus Deringer in Paris and a former intern at the Permanent Court of Arbitration (PCA) in The Hague. Nina has served as counsel in numerous arbitrations under the UNCITRAL, SIAC, SCC, ICC, LCIA, PCA, AAA, ICDR and other arbitration rules, involving English, Bosnian, Saudi, Uzbek, Angolan, Singapore and other laws. Recent cases, concluded successfully in favor of Aceris Law’s clients, include, inter alia, an LCIA arbitration under Saudi law regarding the construction of a desalination plant in the Middle East; an UNCITRAL ad hoc arbitration involving the construction of a water distribution network in Angola; and a SIAC arbitration under Singapore law regarding the construction of a desalination plant in Oman. She has also represented a publicly-listed Malaysian company in a USD 400 million dispute involving a natural gas construction project in Uzbekistan against a subsidiary of a Russian multinational company in the oil and gas sector, as well as a Greek construction company in an UNCITRAL arbitration administered by the PCA against a Bosnian state agency involving the construction of a wastewater treatment plant governed by Bosnian law. Clients praise her as a “very well organized”, a “methodical researcher” with “a very sharp intellect”, “cutting through unnecessary information with excellent drafting ability to present the case succinctly”. They also find her very “friendly and professional”, “easily approachable and very responsive”. Nina speaks English, Serbian/Croatian, Spanish, German and French fluently, and she has basic knowledge of Portuguese. She is qualified to practice law in Serbia.
Bartosz Wygladala is a Polish lawyer, admitted as Attorney and Counsellor at Law in New York. He graduated with an LL.B. from Brunel University London, with an LL.M. from the University of Manchester, and with an LL.M. in International Dispute Settlement from the University of Geneva. Bartosz gained his experience in international dispute settlement by working at law firms in Vienna, Warsaw, and London. He has experience in construction, mining, aviation, franchising, post-M&A, and investment arbitrations under ICC, VIAC, HKIAC, AAA, DIS and SCAI rules, seated in London, Vienna, Paris, Geneva, Philadelphia, New York, and Hong Kong. Bartosz has experience with both common law and civil law disputes. Bartosz speaks English, French, Polish and Italian and has a working knowledge of German.
Sidney Larsen has studied law in both the United States, at the American University Washington College of Law, and in France, at the Universite Paris Nanterre. She also holds a Master’s Degree in International Peace and Conflict Resolution from American University. Of American origin, Sidney speaks English and French. Prior to joining Aceris Law, Sidney interned at the ICC International Court of Arbitration in Paris and completed several internships with various United States government agencies. She has notably been involved in arbitrations under the ICC and ICSID rules of arbitration.
Cynthia Abi Chahine
Cynthia Abi Chahine is admitted to the Paris bar (awaiting her swearing-in-ceremony). Her educational credentials include a degree in private international law and international trade law from the Panthéon-Assas University in Paris. Before joining Aceris Law, Cynthia actively sought opportunities to deepen her understanding of international dispute resolution. She gained experience in both international arbitration and commercial litigation, allowing her to navigate complex legal cases. Her experiences exposed her to a wide range of industries, particularly construction and information technology (data protection, IT contracts, blockchain). She was previously a trainee at Allen & Overy LLP in international arbitration. Cynthia is fluent in French, Arabic and English.
Mouna Baakil is Aceris Law’s Office Manager. Mouna holds a Master II in International Commerce and Management obtained at ESCI Paris and studied law in London at The London Metropolitan University. Prior to joining Aceris, Mouna worked at PWC Morocco. She also worked as marketing and communication manager for a VOIP company based in Casablanca with several branches in France, India and Lebanon. She further served as business manager at Brasserie Kronenbourg of the Carlsberg Group and was a marketing assistant at Cooper Power Tools France. She is Moroccan of origin and speaks fluent French, English and Arabic. Mouna may be contacted regarding traineeships, marketing, billing or operational issues and is always available to answer any questions regarding Aceris Law.