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Legal Observatory / Trade and Customs

Legal Update European Union Court judgment

Court of Justice of the European Union Issues Key Decisions and Opinions in Late September 2026

The Court of Justice of the European Union released a series of press releases announcing judgments, Advocate General opinions, and an institutional election.

What Changed

  • Dismissal of Poland's application to suspend the provisional application of the EU–Mercosur Interim Trade Agreement (Case C-460/26 R).
  • CJEU judgments excluding undertakings in difficulty from energy-related State aid and invalidating national rules enforcing unfair consumer terms (Joined Cases C-503/25 & C-504/25, Case C-900/24).
  • Advocate General opinions advocating broad scope for dual-use items and requiring clear partner identification for data consent (Case C-538/25, Case C-317/25).

Between 17 September 2026 and 29 September 2026, the Court of Justice of the European Union (CJEU) published press releases detailing several key legal developments at the European Union level. These developments directly affect commercial undertakings, consumers, Member States, and international trading partners.

In trade and institutional governance, the Vice-President of the Court of Justice dismissed Poland's application to suspend the Council's decision authorising the provisional application of the EU–Mercosur Interim Trade Agreement (Case C-460/26 R, Press Release No. 135/2026, 29 September 2026). Separately, Maria José Costeira was elected Vice-President of the General Court of the European Union (Press Release No. 131/2026, 23 September 2026).

Regarding competition and State aid, the Court held in Joined Cases C-503/25 Acciaierie d’Italia and C-504/25 Acciaierie d’Italia – II (Press Release No. 133/2026, 24 September 2026) that an 'undertaking in difficulty' may not benefit from advantages designated for undertakings with high consumption of natural gas or electricity. On consumer protection, the Court ruled in Case C-900/24 SVB (Press Release No. 132/2026, 24 September 2026) that EU law precludes national rules or practices maintaining contracts with unfair price increase terms simply because the customer did not challenge them within three years.

Advocate Generals also delivered influential guidance. Advocate General Tamara Ćapeta advised in Case C-538/25 [Flugzeugherstellerin] (Press Release No. 134/2026, 24 September 2026) that the concept of 'dual-use items' must be interpreted broadly to cover strategic and security considerations of the EU and its Member States. In data privacy, Advocate General Dean Spielmann concluded in Case C-317/25 Groupe Canal + (Press Release No. 130/2026, 17 September 2026) that consent given for personal data use by an undertaking's 'partners' for direct marketing is valid only if those partners' identities are known. Finally, in Case C-449/25 (Press Release No. 129/2026, 17 September 2026), Advocate General Laila Medina addressed derived residence rights for third-country national partners of EU citizens.

Who May Be Affected

EU businesses, energy-intensive industries, companies handling dual-use goods, direct marketing entities, EU consumers, third-country national partners of EU citizens, and EU Member States.

Cross-Border Context

Applies directly across the European Union and affects international trade entities, cross-border commercial data transfers, and third-country nationals.

What to check next

  • Review official CJEU case filings and final full-text opinions for Cases C-460/26 R, C-538/25, C-503/25, C-504/25, C-900/24, C-317/25, and C-449/25 once available.

This article provides general information and does not constitute legal advice. Consult the official text and obtain advice appropriate to your circumstances where needed.

Prepared automatically with AI assistance from the official sources linked on this page. Translations and explanations do not replace the official text.

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