Herald Avocats > Paris, France > Firm Profile

Herald Avocats
75008 PARIS

France > Media and entertainment: Music Tier 1

With considerable expertise in complex litigation, Herald Avocats frequently acts for notable record labels. Commanding an in-depth knowledge of the music sector, the team is co-led by two industry experts: Juliette Félix, who maintains an excellent reputation for handling litigation in the field of music and entertainment law, and Jean Castelain, who has specialist knowledge of media and intellectual property law.

Practice head(s):

Juliette Félix; Jean Castelain

France > Media and entertainment: Television/radio Tier 2

Herald Avocats is noted for its depth of expertise in the television sector and advises major clients such as the national broadcaster, France Télévisions. Juliette Félix co-leads the team, bringing multidisciplinary expertise in media and IP to advise and litigate on high-profile mandates. Practice co-leader is Jean Castelain focuses on litigation on behalf of TV groups, libel actions, contractual matters and broadcasting suspension proceedings.

Practice head(s):

Juliette Félix; Jean Castelain


‘Well-established in the radio and television sector.’

‘Juliette Félix is ​​an excellent practitioner, who perfectly masters the niche technique of press and media law. She is a good litigator who is respected by the magistrates.’

‘Strong expertise in the audiovisual field and intellectual property. A coherent team.’

Key clients

France Télévisions

Work highlights

  • Assistance from France Télévisions and two journalists following the defamation complaint by Bolloré subsidiary in Cameroon, Socapalm.

France > Environment Tier 3

The expertise of the environment group at Herald Avocats extends from transactional support, regulatory audits, waste management, land planning mandates, and the management of environmental crises. The practice is directed by William Azan, who regularly assists corporate clients with reducing their environmental impact, and boast additional knowledge of the real estate and renewables segments.

Practice head(s):

William Azan

France > Insurance Tier 3

Herald Avocats is noted for its expertise in life insurance matters, as well as in construction, property damage and product liability cases. The team is predominantly active in disputes, acting for both large French insurance companies and insured entities and individuals, but also advises on corporate, distribution and regulatory issues. Pierre-Yves Rossignol, who is an experienced litigator, leads the practice.

Practice head(s):

Pierre-Yves Rossignol


‘Pierre-Yves Rossignol stands out for his efficiency and availability.’

‘Very competent and responsive team.’

‘Pierre-Yves Rossignol is a lawyer who listens very closely to his clients’ concerns and strives to give the advice most suited to the factual situation as quickly as possible.’

France > Intellectual property: Copyright Tier 3

Herald Avocats’ accomplished IP team, co-led by Jérémy Cardenas, Juliette Félix, Jean Castelain, Anne Cousin, and the recent addition of partner Nathalie Moullé-Berteaux, delivers comprehensive counsel across a diverse spectrum of copyright matters. The practice's expertise encompasses addressing infringement and counterfeiting claims, as well as the meticulous crafting of licensing and assignment agreements. Notably, the team has successfully attracted prominent new clients within the luxury, fashion, hospitality, art, communication, and music sectors, adeptly navigating both contentious and non-contentious issues, standing as strong advocates for their clients before French and European courts.

Practice head(s):

Nathalie Moullé-Berteaux; Jérémy Cardenas; Juliette Félix; Jean Castelain; Anne Cousin


‘The team at Herald Avocats provides unmatched bespoke services. Their multidisciplinary approach is a delight for any collaborator.’

‘Nathalie Moullé-Berteaux is highly responsive, professional, and well-respected and liked by her peers and clients. She is our go-to practitioner when it comes to complex cases that need great expertise and careful handling of the case.’

‘The team brings with them strong ethics of their firm. They are thorough and on point.’

‘Nathalie Moullé-Berteaux is a veteran IP professional, which makes her a recognised expert in the field. Very responsive and pleasant to work with.’

‘Herald’s team has deep knowledge in the IP field. The communication is easy and efficient.’

‘Their service has been very good in terms of their responsiveness, clear feedback and effective communications.’

‘Responsiveness, rapid resolution and fluidity of communications.’

‘Nathalie Moullé-Berteaux is a great leader in IP community.’

Key clients

HEC Paris

Id Group

France > Intellectual property: Trade marks and designs Tier 4

Practice head(s):

Nathalie Moulle-Berteaux; Jérémy Cardenas; Richard Milchior

Other key lawyers:


‘We are very satisfied with our collaboration with this firm. The lawyers are accessible, available, responsive and experts in their field.’

‘A young, responsive and available team.’

Key clients

Goyard St-Honoré

Publicis Groupe

Ahlers Ag (Cardin)


Villa Paolina (Jacques Genin)

Cosfibel Group (Laser)

Les Bains & Les Bains Guerbois

Société Nationale Sauvetage en Mer (SNSM)

Institut Jean Monnet

Leko Labs

Perles d’Histoire

Studio Bleu (Mazarine)



AB Copains

Jade Genin

Jeff Koons


Id Group (Jacadi, Oxybul, Okaïdi..)

20 Minutes France

Boom Technologies, Inc.

HEC Paris

Silvr Group

Ecole Normale Supérieure

Sciences Po (Paris)

Rossel / La Voix du Nord

Tata Consultancy Services (Tata Group)

BlackRock, Inc.

Champagne Lanson / LANSON-BCC group|[brand: “Lanson”]

Champagne Chanoine Frères depuis 1730 / LANSON-BCC group [brands: “Champagne Chanoine”; “Champagne Tsarine” etc.]

Maison Burtin / LANSON-BCC group|[brands: “Champagne Alfred de Rothschild”, “Champagne Gaston Burtin” “Champagne Colligny” etc.]

Région Bourgogne-Franche-Comté

Work highlights

  • Representing Goyard St-Honoré in a trade mark counterfeiting and unfair competition case against Fauré Le Page which begun 10 years ago about a “belle endormie” brand which was illegally wake up and is still ongoing before two further courts (Court of cassation and Court of appeal).
  • Represented Sciences Po in trade mark infringement and unfair competition proceedings before the Paris court of first instance (tribunal judiciaries de Paris).
  • Representing #JamaisSansElles in a civil case brought by Hachette Filipacchi on the grounds of trade mark counterfeiting and damage to the reputation of the renowned mark Elle.

A firm founded on January 1, 1957 by Bernard de Bigault du Granrut
President of the Paris Bar from 1982 to 1984, Bernard du Granrut was known both for his dedication and his forward-looking vision of the profession as well as for his civic commitments, his high standards and his moral values. He was a celebrated litigator, acting in several high-profile cases.

The firm has built its reputation in the field of business litigation for both private companies and public institutions. It has continued its evolution by developing its consulting activity, mirroring the transformation of the business world, both in its legal and entrepreneurial dimensions.

To serve our clients better, we have expanded and strengthened some departments (M&A, private equity, restructuring, new technology law, healthcare). We have joined top ten multi-disciplinary alliance Geneva Group International to ensure that when needed, we can connect our clients with trusted advisers around the world.

Herald, a new challenge
In November 2018, the firm became Herald, thus taking a strong stance: to enhance the value of the collective, while maintaining its historical positioning.

Herald is a symbol of the heritage that has shaped the firm and of its ability to constantly evolve in order to offer a range of high-end, tailor-made and transversal services in all areas of business law.

Expertise, excellence, commitment, attentiveness, creativity: these are the values shared by all the partners and their teams with one goal in mind: outstanding client service.

We strive to provide a high-end, bespoke and integrated service to address the most complex issues facing our clients, from SMEs to large groups. We work both in France and internationally, thanks to our different networks.

Herald, member of the Geneva Group International network
In 2018, our firm joined Geneva Group International, a global alliance of more than 700 independent law firms, consultants, audit and accounting firms, which is consistently ranked among the top ten global multi-disciplinary associations.

Through this network, we enable our clients to benefit from the support of professionals from over 120 countries, experts in local legal, accounting and tax differences, who provide a gateway to global markets. This relationship enhances our abilities to serve our French and international clients, both private and public sector, whether looking for new opportunities or strengthening an existing presence.

Our quality management system has been ISO 9001 certified since 2008.

Areas of practice: Herald is a full-service law firm, composed of seven departments and a German Desk: Banking-Insurance, Labour Law, Corporate-M&A-Tax, Property, Media – IP/IT, Economic, Administrative law. The lawyers work in a cross-disciplinary way, in order to best answer its clients’ needs.

Department Name Email Telephone
Arbitration - Media - White Collar Crime Jean Castelain j.castelain@herald-avocats.com
Corporate - Mergers and Acquisitions - Commercial litigation Bertrand Pébrier b.pebrier@herald-avocats.com
Corporate - Mergers and Acquisitions -Commercial litigation Etienne Rocher e.rocher@herald-avocats.com
Competition and distribution - Intellectual Property Richard Milchior r.milchior@herald-avocats.com
Corporate - Mergers and Acquisitions - Capital Markets Vincent Siguier v.siguier@herald-avocats.com
IT - Telecommunications - Data Anne Cousin a.cousin@herald-avocats.com
Insurance - Real Estate Pierre-Yves Rossignol p.rossignol@herald-avocats.com
Intellectual Property Jérémy Cardenas j.cardenas@herald-avocats.com
Media - Intellectual Property Juliette Félix j.felix@herald-avocats.com
Patrimonial issues and home office - White Collar Crime Stéphane Micheli s.micheli@herald-avocats.com
Tax Réginald Legenre r.legenre@herald-avocats.com
labour and employment Guillaume Roland g.roland@herald-avocats.com
Competition and distribution Corinne Hovnanian c.hovnanian@herald-avocats.com
Private equity - Mergers and Acquisitions - Capital Markets Arnaud Levasseur a.levasseur@herald-avocats.com
Banking - Finance Christophe Jacomin c.jacomin@herald-avocats.com
Photo Name Position Profile
Jérémy  CARDENAS photo Jérémy CARDENAS Partner since 2022, Jérémy is a member of the firm’s IP-IT practice…
Jean CASTELAIN photo Maitre Jean CASTELAIN He specialises in litigation and arbitration proceedings. He offers his services to…
Anne  COUSIN photo Maitre Anne COUSIN Anne Cousin is a partner in the Media-IP-TIC department. She advises and…
Juliette FELIX photo Maitre Juliette FELIX Juliette Félix is a partner in the media and intellectual property law…
Corinne HOVNANIAN photo Maitre Corinne HOVNANIAN Corinne Hovnanian is a partner of the firm since 2021. She advises…
Réginald LEGENRE photo Maitre Réginald LEGENRE Réginald Legenre, partner, is a tax lawyer. He works closely with the…
Arnaud  Levasseur photo Mr Arnaud Levasseur Arnaud Levasseur, who specialises in business law, has been a partner of…
Richard MILCHIOR photo Maitre Richard MILCHIOR Richard Milchior is Of counsel. He advises on intellectual property, European Union…
Nathalie  Moullé-Berteaux photo Maitre Nathalie Moullé-Berteaux Nathalie Moullé-Berteaux advises and litigates in the field of intellectual property law,…
Bertrand  PEBRIER photo Maitre Bertrand PEBRIER Bertrand Pébrier is a partner in the corporate department. He advises companies…
Etienne ROCHER photo Maitre Etienne ROCHER Etienne Rocher is a partner of the Corporate department. He specialises in…
Guillaume ROLAND photo Maitre Guillaume ROLAND He works in all areas of labor law and more specifically in…
Pierre-Yves ROSSIGNOL photo Maitre Pierre-Yves ROSSIGNOL Pierre-Yves Rossignol is a partner in the property and the insurance department.…
Vincent SIGUIER photo Maitre Vincent SIGUIER Vincent Siguier has been a partner at Herald since 2015. He advises…
Partners : 15
Of Counsel : 2
Associates : 26
Paralegals : 3
Counsels : 3
APRAM (Association des Praticiens du Droit des Marques et des Modèles)
INTA (International Trademark Association)
FFF (Fédération Française de la Franchise)
GGI Global Alliance
ACE (Association des Avocats Conseils d’Entreprises)