Léa Dordilly
Léa Dordilly has been a lawyer at the Paris Bar since 2011.
She graduated from the Master in Criminal Law, criminal science and Justice as well as from the Institute of criminal science and criminology of the Faculty of Law of Aix-en-Provence, and was trained by Jean-Marc Florand, a renowned criminal lawyer and student of Jacques Vergès.
Elected “Secrétaire de la Conférence” in 2016, an eloquence competition that distinguishes the twelve best speakers of the Paris Bar each year, she has acquired a solid experience in criminal matters, intervening in numerous criminal cases with high media stakes and pleads daily before the Correctional Court and the Criminal Courts (“Cour d’assises” and “Cour criminelle départementale”).
She has therefore acted as defense counsel in the cases of the terrorist attacks of November 13th, Saint-Etienne-du-Rouvray, the Thalys and on the side of the civil parties in the case of the attack in Nice.
Winner of numerous moot court competitions, Léa Dordilly also teaches at the Paris Bar School (EFB).
In 2018, she created with Simon Clemenceau the firm Dordilly Clemenceau Avocats, before founding Siano in 2024.
General criminal law - White collar crime - Juvenile criminal law - Family law - Media law
Working languages: French, English
Clémence Witt
Clémence Witt has been a lawyer at the Paris Bar since 2012 and at the Barcelona Bar since 2023.
After graduating from the Sciences Po Paris Law School (Master “Legal and Judiciary Career”) and from the Panthéon-Assas University (Master II in Human and Humanitarian Rights, Criminal science certificate), Clémence Witt worked in Cambodia in the defense team conducted by Jacques Vergès before the Extraordinary Chambers set up by the United Nations. She then became an associate of the President of the Paris Bar Pierre-Olivier Sur practicing mainly criminal law, white collar crime, international criminal law and media law, both in France and abroad (Argentina, Burkina Faso, Ivory Coast, India, Lebanon, Libya, Mexico, Tunisia).
In 2015, Clémence Witt was elected “Secrétaire de la Conférence” and intervenes therefore in a lot of criminal cases with high media stakes, such as those of the terrorist attacks of January 2015, November 13th and Nice.
In 2017, she created the firm Chavanne & Witt Avocats with Matthieu Chavanne and opened a secondary office in Barcelona in 2023, before founding Siano in 2024.
Clémence Witt has developed an expertise in extradition proceedings (International and European arrest warrants and Interpol red notices) as well as international crimes (crimes against humanity and war crimes), representing for example the victims of the chemical attacks that occurred in Syria in August 2013.
Since 2019, she is a lecturer in substantive and procedural criminal law at Sciences Po.
General criminal law - White collar crime - International criminal law - Media law
Working languages: French, English, Spanish
French Association of Criminal Lawyers (ADAP), European Criminal Bar Association (ECBA)
Simon Clemenceau
Simon Clemenceau has been a lawyer at the Paris bar since 2013.
After graduating from Paris 1 Panthéon Sorbonne University (Master in Law of economic activities), he practiced for more than five years in white collar crime, general criminal law and labour law at the firm Milon & Associés.
In 2016, Simon Clemenceau was elected tenth “Secrétaire de la Conférence”, in charge of criminal defense. In this capacity, he intervenes in numerous criminal cases with high media stakes, pleads daily before the Correctional Court and the Criminal Courts (“Cour d’assises” and “Cour criminelle départementale”).
He acted as defense counsel in the cases of the terrorist attacks of November 13th, Saint-Etienne-du-Rouvray, Magnanville, and represented the civil parties in the case of the attack in Nice.
In 2018, he created Dordilly Clemenceau Avocats with Léa Dordilly, before founding Siano in 2024.
He is a member of the ALTAJURIS network, a group of lawyers present throughout France, and is a lecturer at the Paris Bar School (EFB) and at the INSEEC BUSINESS SCHOOL in Paris.
General criminal law - White collar crime - Criminal labour law - Labour Law - Social law - Media law
Working languages: French, English
Camille Tardé
Camille Tardé has been a lawyer at the Paris bar since 2018.
After graduating from the Sciences Po Law School (Paris), she trained with leading criminal lawyers (Henri Leclerc & Associés and Le Borgne Saint-Palais Associés) and judges of the Criminal Chambers of the Paris Court of Appeals (Chambers 8-1 and 8-2).
When she was sworn in, she joined Chavanne & Witt Avocats as an associate.
In September 2023, she became a partner alongside Clémence Witt and Matthieu Chavanne, before founding Siano in 2024.
Her main areas of activity are criminal law, white collar crime and media law. She also regularly appears before juvenile courts, both in criminal cases and for educational assistance.
General criminal law - White collar crime - Media law - Juvenile criminal law and educational assistance.
Working languages: French, English
Anaïs Sarron
Anaïs Sarron graduated from the Sciences Po Paris Law School (Master in Economic Law - major in “Global Governance Studies”, 2017), and from the LLM in international and transnational criminal law at the University of Amsterdam (UvA, 2019). She has been a lawyer at the Paris bar since 2020.
Between 2015 and 2019, she practiced criminal law at the firm Thierry Lévy et Associés, alongside the Public Prosecutors before the Investigating Chamber of the Paris Court of Appeals and within the NGO promoting alternatives to imprisonment “Parmi les Présents”.
She then worked at the law firm Chavanne & Witt Avocats as an associate between 2020 and 2024 before joining Siano.
General criminal law - International criminal law - Extradition proceedings - White collar crime
Working languages: French, English, Spanish, Portuguese, Italian
European Criminal Bar Association (ECBA)
Nicolas Simon
A graduate of Sciences Po Paris Law School (Master in Economic Law - major in Economic Litigation and Arbitration), Nicolas has been a lawyer at the Paris bar since 2023.
Between 2019 and 2022, he trained with leading business law firms (Clifford Chance) and renowned criminal lawyers (Clarisse Serre, Bâtonnier Pierre-Olivier Sur), and also worked with the judges of the Paris Court of Appeal specializing in organized crime.
After being sworn in, he joined Dordilly Clemenceau Avocats as an associate, before joining Siano in 2024.
General criminal law - International criminal law and extradition proceedings - White collar crime - Media law
Working languages: French, English
Théo Berrebi
Théo Berrebi graduated with an LLB from Queen Mary University of London (2018) as well as a Master II in Human and Humanitarian Rights from Panthéon-Assas University (2021). He has been a lawyer at the Paris bar since 2024.
Between 2019 and 2021, he undertook several internships at the International Criminal Court and the International Residual Mechanism for Criminal Tribunals in the Hague, as well as in a criminal and immigration law firm.
He then trained at the law firm Chavanne & Witt Avocats from 2022 until January 2024 when he was sworn in and joined Siano as an associate.
General criminal law - International criminal law - White collar crime
Working languages: French, English
European Criminal Bar Association (ECBA)