Litigation and Arbitration: The Best Procedural Strategy for Your Business

Civil and commercial litigation in Spain is governed by the Law on Civil Procedure (Ley de Enjuiciamiento Civil, LEC, Law 1/2000), which establishes the procedural rules for ordinary and abbreviated proceedings before the civil and commercial courts. Commercial arbitration is governed by Law 60/2003 on Arbitration, which is based on the UNCITRAL Model Law and allows parties to agree to arbitration as an alternative to court proceedings, producing awards with the same binding force as a court judgment. Since Organic Law 1/2025 entered into force on 3 April 2025, prior attempt at an Adequate Dispute Resolution Mechanism (MASC) — including mediation — is a mandatory procedural requirement before filing most civil and commercial claims in Spain.

Our litigation team has represented companies in high-value disputes before Spain’s main courts and in international arbitrations, with a strategic approach that always prioritises the optimal economic outcome for the client.

Dispute Resolution as a Business Decision

Litigation and arbitration are not just legal processes — they are business decisions with financial, reputational, and relationship consequences that extend well beyond the courtroom or hearing room. The decision to initiate proceedings, to defend, to settle, or to pursue alternative resolution requires the same rigour as any major strategic choice. A poorly timed or poorly conceived legal action can destroy more value than the underlying dispute itself.

Our starting point is always the strategic assessment: What is the realistic range of outcomes? What is the true cost of each route, including management time and relationship impact, not just legal fees? Are there alternative paths — negotiation, mediation, contractual mechanisms — that can deliver an acceptable outcome faster and more cheaply? Only after that analysis do we recommend whether and how to proceed.

Evidence Is Won Before the Hearing

The outcome of commercial disputes is determined largely before the hearing date — by the quality of the evidence assembled, the selection of the right expert witnesses, and the coherence of the legal and factual narrative. Documentary evidence must be collected and preserved correctly (including electronic evidence, which is subject to chain-of-custody requirements). Expert witnesses in financial, technical, or sector-specific disputes must be identified early, briefed thoroughly, and prepared to withstand cross-examination.

In disputes arising from mergers and acquisitions — working capital adjustments, earn-out disputes, warranty claims — the financial dimension is frequently the most contested. We coordinate closely with forensic accountants, financial valuers, and sector experts to build a technically robust case that courts and arbitral tribunals can follow. Our transactional knowledge means we understand how the contested provisions were meant to work, which is critical to arguing their correct interpretation.

International Arbitration: Choosing the Right Institution and Rules

For cross-border commercial disputes, the choice of arbitral institution, seat, governing law, and arbitrators is as important as the substantive legal arguments. Different institutions have different strengths: the ICC for multi-jurisdictional, high-value disputes; the LCIA for English-law governed agreements; the CAM and CIMA for Spain-focused matters; ICSID for investment treaty arbitrations. The seat of arbitration determines which national courts have supervisory jurisdiction and which procedural law applies to the arbitration itself.

We advise clients on arbitration clause drafting before disputes arise — a clause that is technically defective or incomplete can make an award unenforceable — and manage the full arbitration process from constitution of the tribunal through to enforcement of the award. Where the counterparty is in a different jurisdiction, we coordinate with local co-counsel to manage any parallel proceedings and the recognition and enforcement process.

Preserving Value Through Mediation

We are advocates of mediation and other alternative dispute resolution methods when the circumstances are right. A commercial mediation, well-prepared and with the right mediator, can resolve in days what courts would take years to decide, at a fraction of the cost, and without the reputational exposure of a public proceeding. Where the parties have an ongoing relationship that both wish to preserve, mediation is almost always worth attempting before litigation. We prepare clients for mediation as rigorously as for trial, and our success rate in mediated settlements reflects that preparation.

Organic Law 1/2025 and the MASC Requirement: The New Mandatory Pre-Filing Step

Organic Law 1/2025 on measures to improve the efficiency of the public justice service introduced, from 3 April 2025, a mandatory requirement to attempt an Adequate Dispute Resolution Mechanism (MASC — Medio Adecuado de Solución de Controversias) before filing most civil or commercial claims in Spain. The admissibility of a claim before the courts is now conditional on evidencing that this prior step was attempted.

The practical implications are significant for businesses with ongoing commercial disputes or those designing new contracts. The MASC requirement does not mean a lengthy or costly formal process: the law contemplates different modalities — mediation, conciliation, binding confidential offer, or documented direct negotiation between counsel. A formal exchange of settlement positions documented by lawyers can satisfy the requirement within days, without any institutional process being needed.

Strategically, the mandatory MASC creates a structured pre-litigation negotiation context. For many disputes, this step can be the opportunity to reach a settlement that the parties control at a fraction of the cost of a trial. Contracts drafted before the law came into force should be reviewed to ensure their dispute-resolution clauses are compatible with the new requirement. The MASC obligation has important exceptions: urgent interim measures, payment orders (procedimiento monitorio), certain family law proceedings, and some labour disputes. Our team assesses in each case whether the requirement applies and which MASC modality best serves the client’s strategic interests.

Enforcement: Making Judgments and Awards Pay

Winning a judgment or arbitral award is only half the battle. A favourable decision that cannot be enforced against the losing party’s assets has no practical value. We manage the complete enforcement phase: identifying the debtor’s enforceable assets, filing seizure requests, managing mortgage enforcement proceedings, and, for foreign judgments and awards, handling the exequatur process before the relevant High Court of Justice (Tribunal Superior de Justicia) under the 1958 New York Convention — enforceable in over 160 countries.

Asset investigation before filing or early in proceedings is often decisive: understanding what assets a counterparty holds in Spain and abroad helps assess the realistic economic value of a favourable outcome, and informs whether interim protective measures should be sought to prevent asset dissipation before a final decision is rendered.

Preventing Litigation Through Contract Design

The most cost-effective litigation work is the kind that never needs to happen. Well-drafted commercial contracts — with clear dispute-resolution clauses, governing law, a technically valid arbitration agreement, and pre-litigation escalation mechanisms — are a form of litigation insurance. When we participate in the negotiation of a contract, we think about how that contract will be executed if things go wrong: are representations and warranties specific enough to be enforced? Are earn-out or price-adjustment mechanisms detailed enough to prevent calculation disputes? Is the arbitration clause valid in the chosen seat?

For companies with significant commercial contracts in Spain, a periodic review of their contractual dispute-resolution architecture — before any dispute arises — is a sound risk-management investment. The cost of that review is invariably small compared to the cost of managing a dispute that could have been structured more favourably from the outset. We also advise on the evidentiary preservation practices that protect companies against the loss of critical documentation that determines case outcomes.

The Spanish judicial system: courts and timelines

Understanding the Spanish court system is essential for litigation strategy. Civil and commercial disputes are heard by the Juzgados de Primera Instancia (first instance) and Juzgados de lo Mercantil (commercial courts for insolvency and company law matters). Appeals go to the Audiencia Provincial; further appeals to the Tribunal Superior de Justicia (autonomous community level) and ultimately the Tribunal Supremo on points of law.

Realistic timelines in Spanish civil litigation: first-instance judgments in commercial courts in Madrid, Barcelona, or Valencia typically take 18-36 months from claim filing to judgment, depending on complexity and whether oral evidence is required. Appeals to the Audiencia Provincial add 12-18 months. Enforcement proceedings for uncontested claims through the monitorio process (Articles 812-818 LEC) are significantly faster — 2-4 months for an initial order — and appropriate for claims up to EUR 5 million where the debt is documented.

Arbitration timelines: major institutional arbitrations (CAM, ICC, CIMA) typically conclude within 12-18 months from constitution of the tribunal to award for standard commercial disputes. Emergency arbitration procedures (available under ICC and most major rules) can produce protective decisions within 15 days.

Enforcement of foreign judgments and awards in Spain

Foreign court judgments require recognition in Spain through the exequatur procedure before Spanish courts, applying bilateral treaties, EU Regulation 1215/2012 (Brussels I recast) for EU judgments, or the reciprocity doctrine under LEC Articles 952-958. EU judgments benefit from the most streamlined recognition procedure — sometimes not requiring formal exequatur proceedings for enforcement.

Foreign arbitral awards benefit from the New York Convention (Spain is a signatory since 1977), providing a streamlined recognition procedure with limited grounds for refusal. Recognition applications are filed before the Tribunal Superior de Justicia of the autonomous community where enforcement is sought. Our litigation team manages the full recognition and enforcement process for foreign judgments and awards against Spanish-domiciled defendants.

Alternative dispute resolution: mediation under Ley 5/2012

Spanish mediation is governed by Ley 5/2012 de Mediación en Asuntos Civiles y Mercantiles, which transposed the EU Mediation Directive. Court-annexed mediation is increasingly promoted by Spanish commercial courts as a case management tool, and pre-litigation mediation clauses in commercial contracts have been validated by the Spanish Supreme Court as conditions precedent to litigation. Successful mediation produces a mediation agreement that can be enforced as an enforceable title under LEC Article 517.

For cross-border commercial disputes where maintaining the commercial relationship is a priority, mediation before the WIPO Arbitration and Mediation Center or the International Chamber of Commerce mediation service provides a neutral, confidential environment with access to mediators with sector-specific expertise. Contact our dispute resolution team for an assessment of the most appropriate mechanism for your specific situation.

Injunctions and interim measures in Spanish courts

Speed is often decisive in commercial disputes. Spanish procedural law provides interim protective measures (medidas cautelares) under Articles 721-747 LEC that can be obtained — in urgent cases, ex parte (without notice to the defendant) — within days of application. Available measures include: restraining orders prohibiting asset disposals or transfers (embargo preventivo), orders for deposit of disputed goods, provisional prohibition of specific actions, and measures for the protection of confidential information in intellectual property disputes.

The ex parte interim measure application requires the applicant to demonstrate fumus boni iuris (reasonable prospect of success on the merits) and periculum in mora (risk that delay will cause irreparable harm). Courts assess these criteria summarily and the initial decision is typically rendered within 24-72 hours in urgent cases. The opposing party then has the right to challenge the measure in a subsequent hearing.

In arbitration proceedings, emergency arbitration rules (available under ICC, LCIA, and CIMA rules) enable appointment of an emergency arbitrator within 2-3 days, with a protective decision typically within 15 days. For disputes where the delay of constituting a full tribunal (4-6 weeks under typical institutional rules) creates unacceptable risk, emergency arbitration is the appropriate mechanism.

Our litigation team has extensive experience with urgent interim measure applications in both court and arbitration proceedings, including cross-border enforcement of Spanish interim measures in EU jurisdictions under Brussels I recast.

Self-diagnostic: are you prepared for dispute risk?

• Do your material commercial contracts specify governing law, jurisdiction (or arbitration seat), and a pre-litigation escalation mechanism?
• Is key correspondence and documentation (emails, WhatsApp messages, meeting notes) preserved and accessible if you need to reconstruct the history of a relationship in litigation?
• Are your limitation periods being tracked? The standard prescription period for contractual claims in Spain is 5 years under the 2015 CC reform; for tort claims it is 1 year (Article 1968 CC); specialised periods apply in commercial contracts, employment, and regulatory matters.
• Do you have professional indemnity or commercial legal expenses insurance that covers dispute costs?
• Have you identified your most likely dispute scenarios — counterparty credit default, contractual misrepresentation, IP infringement — and assessed the litigation risk associated with each?

Contact our dispute resolution team to discuss pre-dispute risk assessment and contract governance, or for immediate assistance with an active or threatened dispute.