Our firm

R&G office views

Who we are

Our law firm Rivero & Gustafson Abogados, founded in 1997, under the direction of Sebastián Rivero and John Gustafson, advises companies, entrepreneurs and individuals in the most diverse business sectors relating to their daily activity, for decisive strategic transactions and defending their interests before the courts of justice and arbitral tribunals.

In Rivero & Gustafson Abogados we make available to our clients all our experience and commitment for representing and defending their interests.

The experience of a team that has been developing a legal firm representing businesses in Spain for several years and defending the interests of a wide portfolio of clients who year-on-year renew their trust in us.

Our commitment to achieving satisfactory outcomes is essential in the Firm’s development and leads us to advise on key areas such as procedural law, to hire the most technically and professionally qualified lawyers, and collaborate with firms in those jurisdictions for which our clients need the best advice.

Our practice areas

Mercantil R&G

Commercial & Corporate

Procesal R&G

Dispute Resolution & Procedural

Laboral R&G


Fiscal R&G


Administrativo R&G


General R&G

Why us

Our philosophy

At Rivero & Gustafson we firmly believe that providing legal advice and defending a party’s interest should be based on a continued support to the client, as well as on providing solutions with the utmost rigour, flexibility, and technical ability. Constant communication and good legal practice are our professional hallmark.

Our services

Since our firm was founded in 1997, we have been providing comprehensive legal advice in all areas of law, our team is composed of professionals specialised in Commercial, Tax, Dispute Resolution, Employment and Administrative Law. There is maximum integration between departments allowing us to provide a quality service, in accordance with technical rigour and efficiency.

Our commitment

Our entire team, from the moment a client requests our services, assumes the commitment to work with professionalism and diligence on the issues raised. This professional work ethic has been rewarded on multiple occasions by recommendations in top legal directories.

Creation year

Happy clients


International recognition

Top legal directories like Chambers & Partners and Best Lawyers have been recognising the work of Rivero & Gustafson’s lawyers in its European guide rankings for more than a decade.

Best Lawyers

“John Gustafson represents clients during disputes ranging from shareholder disputes and director´s liability to contractual litigations.

Chambers Europe 2022, Chambers Global 2022

Clients value his practical approach, with one source underlining his empathy and emotional intelligence.

Chambers Europe 2020

He is an unbelievable big-picture guy who also knows the detail.
Chambers Europe 2019

  The team is quick and clear.

Chambers Europe 2018

The team is very proactive, involved and flexible. The lawyers have an extraordinary availability.”

Chambers Europe 2017

I have a lot of confidence in the firm; it is a boutique where the lawyers are pragmatic and practical.”

Chambers Europe 2016

A dynamic office that is always very available and really finds answers.

Chambers Europe 2015

We’re very satisfied; the firm is very close to the client and is available at any point. The lawyers are transparent and honest.”

Chambers Europe 2014