Biopharma & Life SciencesStandard Monitoring

ECLI:ES:TS:2026:312

Live Docket

European Patent Litigation Tracking · Tribunal Supremo (Sala de lo Civil)

Executive Teardown ↓Request Custom Matter Memo

Judicial Venue

Tribunal Supremo (Sala de lo Civil)

Action Type

patent_validity_appeal

Patent in Suit

EP 3 883 351

Strategic Executive Teardown

For Lead Counsel & Practice Groups

Spanish Commercial Court Patent Action (Barcelona / Madrid)

Key Holding: Decision issued regarding preliminary relief and local jurisdiction under Spanish Ley de Patentes.

🎯 Litigator Takeaway & Practice Pointer

Spain did not ratify the UPC Agreement. Injunctions obtained in the UPC have zero legal force in Spain, making independent Spanish proceedings essential for total Iberian market protection.

⏱️ Procedural Horizon & Next Milestones

Parties proceed to the Audiencia Previa (preliminary hearing) or appeal to the Audiencia Provincial.

Cross-Border Multi-Front Litigation Matrix

Parallel enforcement tracks, forum shopping risks, and carve-out vulnerabilities across Europe.

Conflict Risk: Moderate

Audiencia Provincial de Barcelona (Sec. 15)

active

Non-UPC national injunction & MWC venue

UPC Paris Central Division

potential

Pan-European validity challenge

Patent Asset & Commercial Exposure

Technology Field

Biopharmaceutical Formulation / Biologics

Unitary Status

Unitary Patent (UP)

SEP / FRAND Classification

Standard Patent

Commercial Stakes

PCSK9 Monoclonal Antibody (Alirocumab / Evolocumab - €1.8B Global Sales)

Parties & Representing Counsel of Record

Claimant / Patentee

Sanofi España SL

Representative Law Firm: Counsel on Record

Defendant / Opponent

Mylan Pharmaceuticals SL

Representative Law Firm: Counsel on Record

Venue & Judicial Speed Benchmarks

Speed to Preliminary Order

60 days

Median from filing

Injunction Grant Propensity

55%

Division historical average

Language of Proceedings

Spanish (100%)

Bench Procedural Tendency

Mobile World Congress fast-track, ex parte protective letters scrutinized

Published Orders & Court Decisions

1 published order(s)

ES_TS_2026_312

Issued 2026-05-14

sentencia_casacion

Presiding: Assigned Chamber

Desestimación de recurso de casación: Validez y actividad inventiva confirmadas en segunda instanciaSource Document ↗

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