Our highly-ranked international arbitration lawyers have served as counsel in hundreds of international commercial, construction and investor-State arbitrations under the ICC, ICSID, UNCITRAL, LCIA, ICDR, SIAC, SCC, DIAC, HKIAC, JAMS, CICA, PCA, OHADA and other arbitration rules. We have provided legal representation for arbitrations under English law, French law, Swiss law, Singapore law, Spanish law, Russian law, Saudi Arabian law, Mexican law, Japanese law, German law, Turkish law, OHADA law, Malaysian law, Hong Kong law, Angolan law, Moldovan law, Albanian law, Romanian law, Georgian law, Uzbek law, public international law, various American laws, various Canadian laws, and the laws of many other common law and civil law jurisdictions. All of our arbitration lawyers speak English and French fluently, while individual lawyers also speak a variety of other languages, including Spanish, Portuguese, Polish, Arabic, Serbo-Croat, Czech, German and Russian. Our goal is to provide the best value for arbitration legal representation, globally, while resolving each dispute in line with our client’s interests.

William Kirtley

William Kirtley is a Franco-American Harvard, Columbia and Sorbonne trained international arbitration lawyer with over seventeen years of experience specialising in international commercial, investment and construction arbitration at the highest level. He is a member of the New York and Washington Bars and a former 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 or arbitrator in disputes on all continents, under the UNCITRAL, ICC, ICSID, SCC, LCIA, CICA, CIArb, PCA, SIAC, DIAC, JAMS, AFA and other arbitration rules. Recognized by Décideurs in 2014, 2015, 2016, 2017, 2018 and 2019, named a “Rising Star of International Arbitration” by the Leader’s League and named as the “Best of the Best” in various legal awards and “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“. +More

Nina A Jankovic

Nina A Janković holds an LLM in Public International Law from Leiden University, the Netherlands, and an LLB from Belgrade University, Serbia, graduating summa cum laude. She 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 prior to joining Aceris.

At the PCA, Nina was involved as a case administrator in a number of public international law and investment law cases, examples of which include a maritime boarder issue between two Balkan States, a confidential case against an international organisation and a case brought against Russia in relation to violations of environmental and maritime law.

She was also a legal intern in law firms in Belgrade and Berlin and a trainee at the German Bundestag in 2014 and a holder of the International Parliamentary Scholarship (IPS). Nina participated in the Phillip C. Jessup Public International Law Moot Court Competition, representing Belgrade University in 2013 and reaching the final rounds, and she coached the Leiden Law School team for this competition in 2015. Nina joined the arbitration lawyers of Aceris in 2016.

Nina speaks English, Serbian/Croatian, Spanish, German and French fluently. She is qualified to practice law in Serbia. +More

Zuzana Vysudilova

Zuzana is a French-educated arbitration lawyer, who is registered at the Paris Bar. She joined Aceris Law in 2017. She speaks English, French, Slovak and Czech fluently.

Zuzana holds an LLM in International Economic Law from the Sorbonne University in Paris and an LLM in Litigation, Arbitration and Alternative Dispute Resolution Modes from the University of Paris 2 – Panthéon-Assas. During her studies, she wrote two master theses: on Procedural Treaty Shopping in Investor-State Arbitration and on Anti-suit Injunctions in ICSID Arbitration. Representing the Paris Bar School, she participated in the 12^th edition of the Paris International Arbitration Moot Competition organised by Sciences Po and reached the final rounds.

Zuzana previously performed a twelve-month internship at Shearman & Sterling, in Paris, where she was involved in a number of ICSID, UNCITRAL and ICC cases. She also assisted in the Project directed by the UNCITRAL Secretariat related to the www.newyorkconvention1958.org website and the Guide on the Convention on the Recognition and Enforcement of Foreign Arbitral Awards.

Zuzana performed her final internship at Rasseck Bourgi’s office. She was involved in an UNCITRAL investment arbitration concerning a real-estate project, the enforcement of an ICSID award rendered in the aviation industry, an ICC arbitration relating to a construction dispute and multiple OHADA cases. +More

Isabela Monnerat Mendes

Isabela Monnerat Mendes is a Brazilian national who is authorized to practice law in Brazil (São Paulo section) and admitted to the Paris Bar.

She was an Associate in Transnational Arbitration & Litigation at the Alfredo De Jesus O. law firm in Paris prior to rejoining Aceris Law, where she was formerly a trainee. She had previously been a trainee at Clifford Chance LLP in Paris and Dechert LLP.

Isabela obtained an LL.M. in Comparative and International Dispute Resolution in London at the Queen Mary University of London with Merits. She also obtained a Master 2 in Arbitration and International Commerce at the University of Versailles Saint-Quentin-en-Yvelines as well as a law degree at the Pontifícia Universidade Católica de São Paulo with Honors.

Isabela has published a number of articles on investor-State arbitration, in English and Portuguese and speaks fluent English, Portuguese, French and Spanish.

Anne-Sophie Partaix

Anne-Sophie Partaix, a French national with significant international experience, is admitted to the Paris bar.

She was an intern at Herbert Smith Freehills in Paris, an intern at Orano (ex-Areva), an intern at the Rasseck Bourgi Law Firm and a legal intern at ENGIE prior to joining Aceris, where she assisted in obtaining over USD 200 million in compensation for a foreign investor.

She obtained a Master 2 in International Economic Law at the University of Paris II (Panthéon-Assas), after obtaining an LL.M. in Public International Law at Queen Mary University in London and a Master 1 in International Law and European Law at the Faculté libre de Droit in Lille.

Anne-Sophie was a semi-professional fencer prior to becoming a lawyer. Anne-Sophie speaks French, English and Spanish.

Special Counsel

Abdullah Medallah

Abdullah Medallah is a lawyer admitted to practice law in Saudi Arabia who began his career as a Construction Engineer with the Royal Commission/Bechtel.

He studied law in Glasgow and London and worked as in-house counsel for companies in venture capital, private equity, construction and oil and gas.

Abdullah is a Doctoral Researcher in London and speaks English and Arabic. He assists Aceris Law with arbitrations involving the Middle East.

Marie-Camille Pitton

Marie-Camille Pitton is a Harvard, Oxford and Sorbonne educated arbitration lawyer, who is registered as an attorney in New York and the Versailles Bar. Marie-Camille Pitton has over a decade of experience in international arbitration and arbitration-related litigation, serving clients from diverse jurisdictions.

Prior to March 2017, Marie-Camille Pitton was Counsel at the ICC Court of arbitration, where she supervised hundreds of arbitration proceedings, with a specific focus on cases related to France, Africa and the Middle East.

In this capacity, she has been confronted with every possible procedural difficulty and advising arbitration professionals (arbitrators, counsels and in-house counsels) from a myriad of jurisdictions.

Between 2008 and 2012, Marie-Camille Pitton was a lawyer in the international arbitration and litigation group of a leading American international corporate law firm. She previously worked at University Paris I as a teaching assistant, while completing her PhD in the field of private international law and sales law, which was published by Eleven publications in 2013.

Katarina Simalova

Katarina Simalova, based in London, is an English Solicitor and U.S. attorney with a background in civil law, the common law and international arbitration.

She worked at Jenner & Block in London, as well as Clyde & Co LLP, for a half-decade after obtaining a Master of Laws in Comparative and International Dispute Resolution at the Queen Mary University of London. She also has degrees in law from the Florida Coastal School of Law, where she graduated summa cum laude, as well as the BPP Law School.

Katarina speaks English, Czech, Polish, Russian, Slovak and Spanish and is a frequent speaker at arbitration conferences and the author of a number of publications concerning international arbitration.

Trainees and Consultants

Aceris Law has two or three trainees at all times, serving for six-month internships or consultancies. Interns from outside of the EU may apply and may remain in their State of origin if they wish via a remote internship (Aceris supplies all technology). We choose our trainees and consultants on the basis of their academic excellence, their language skills and their demonstrated interest in international arbitration. Interested applicants should send a c.v. and cover letter.

Marina Sim, based in Paris, is a Russian national who holds a Master 2 in International Economic Law from the University of Paris II Panthéon-Assas (Eiffel scholar), and a Bachelor’s Degree and a Master’s Degree from the MGIMO University. She also studied in Spain at the Universidad Complutense of Madrid. Marina gained experience in public international law and international dispute resolution at the Russian embassy in Argentina and at the Paris offices of Foley Hoag, Reed Smith and Ashurst, prior to joining Aceris Law as a trainee then junior associate. Marina speaks native Russian and is also fluent in English, Spanish and French.

Anastasia Tzevelekou, based in London, is a Greek-qualified lawyer who obtained a Masters of Laws in International Business Law from the London School of Economics and Political Science in London. She also obtained a Masters of Laws in International Commercial Arbitration, graduating first in her class, at the Democritus University of Thrace in Greece. Prior to joining Aceris, Anastasia was a trainee at KPV Legal in Athens, Greece. Anastasia is fluent in Greek, English and French.

Office Manager

Mouna Baakil is Aceris Law’s Office Manager. Mouna studied law before obtaining a Master II in International Commerce-Management and working for the Carlsberg Group and PWC. She is Moroccan of origin and speaks fluent French, English and Arabic.