Evaluating the Administration of Justice and Abuse of Process: A Critical Analysis of the Mariana Jurisdiction Challenge 2022 and the European System of Law for Civil and Commercial Matters for a Third State

Background: This research critically analyses the jurisdictional challenges and their implications for the proper administration of justice in the case of Mariana vs. BHP Group 2022 EWCA Civ 951. The legal route taken by the High Court of Appeal is examined, considering both the proceedings in the UK (pre-Brexit) and a third state (Brazil). This text examines the impact of the European legal framework on EU member states and evaluates the approach of UK towards Article 34 of the Brussels Regulation. The analysis examines whether pursuing damages based in civil or commercial liability suffered by victims domiciled in a Third State through European jurisdiction is appropriate. Methods: The study employs a case law analysis, supported by doctrinal legal research methodology, to systematically examine the balance of the principle of forum non conveniens and the consistent application of the Brussels Regulation in the Mariana Case. This is a critical review of the UK High Court's decision to overturn Judge Turner's ruling. The review emphasizes the adherence to historical national precedents, European Union Law, and the European Court of Justice's previous rulings against the United Kingdom's strike-out legal technique. The article explores the complexities of administering justice, focusing on the interplay between case management discretion, the principle of proportionality, and the court's responsibility to ensure a fair trial. It analyses the impact of factors such as the court's structure, case complexity, and the time required for resolution within this framework, while also considering the court's duty to administer justice effectively. . Results and Conclusions: The study's findings enhance comprehension of jurisdiction challenges in transnational litigations within the European Legal System and their implications for the proper administration of justice. The article recommends a balanced approach that upholds the substantial rights of claimants while aligning national practices with EU civil liability standards, promoting judicial harmony in transnational civil and commercial liability cases in the European Union.