A case now before the European Court of Justice is testing how far genetic evidence can travel between member states, and the answer could reshape cross-border investigations across the bloc. At its heart sits a French court’s request to gather post-mortem DNA from a deceased person, and a thorny question about whether one country’s fundamental-rights standards can block another’s.
The dispute reached Luxembourg from a tribunal in Chambery, which turned to the EU’s Taking of Evidence Regulation to arrange sampling in another member state. Article 12 of that 2020 law lets a court refuse a foreign request only in narrow circumstances, and the judges wanted to know whether clashing national rules on consent counted among them.
Advocate General Tamara Capeta set out a view that leans firmly toward cooperation. She argued that a requested court cannot turn down a valid request simply because the procedure would offend fundamental principles of its own national law. On the sharper point, she proposed that the Charter of Fundamental Rights does not prohibit post-mortem genetic sampling even where the deceased gave no consent during their lifetime.
That reasoning, if the Grand Chamber follows it, would tilt the balance toward mutual trust between national courts. Judges hearing the case, led by Thomas von Danwitz, must now weigh how privacy and dignity survive after death. Advocate general opinions do not bind the Court, yet the judges follow them in a clear majority of cases.
The stakes stretch beyond one grave. Genetic evidence increasingly decides inheritance disputes, paternity claims and criminal cold cases, and prosecutors lean on smooth cross-border requests to close files. A ruling that hands national courts a broad veto could slow that cooperation to a crawl, while a narrow one would keep evidence flowing but raise hard questions about bodily autonomy. Analysts including the European Association for Private International Law flag the case as one of the summer’s most consequential, and the Court of Justice is expected to rule in the months ahead.
Whatever the outcome, the judgment will set a marker for how Europe handles the most intimate form of evidence a person can leave behind. For families, investigators and courts alike, the line the judges draw will matter long after the case fades from view.




