Department profile
ONTIER

Arbitration

Global Guide 2026 : Spain


ONTIER

Rankings

Chambers and Partners

Ranked Individual

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Chambers Review

Provided by Chambers

Arbitration - Spain

Band 4

Band 4


What the Team is Known For

ONTIER is a robust domestic outfit regularly advising clients from a range of sectors including construction, energy and telecoms. The law firm draws strength from its large global network and regularly represents clients in arbitration mandates. It further retains experience in handling proceedings under ICC rules.

Strengths

ONTIER have great expertise in the Spanish market. The team are friendly, easy to work with and quick to grasp complex expert issues.

The service we receive from the firm is exceptional and their response times are fantastic.

ONTIER provides an exceptional service with almost immediate answers to any questions or queries raised by us.

ONTIER are always looking to innovate and their fees are competitive. They are doing a great job.

ONTIER are efficient, business-oriented and very dedicated.

Notable practitioners
Mercedes Romero

Mercedes Romero is praised by clients for her activity in the sphere of international arbitration. Representing international companies in the construction, energy and investment sectors, she is active in ICC arbitration proceedings and arbitration award enforcements.

She displays a sharp grasp of the subject matter.

Mercedes Romero is an exceptional team leader.

Mercedes is very hard-working and very valuable.

Mercedes Romero is a great and highly prepared lawyer.

She has great technical capabilities and a great human capacity with clients. She really understands their needs.

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Ranked Individuals at ONTIER (1)

Spain

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