Swiss extradition appeals go to the Federal Criminal Court (Bellinzona) and, ultimately, the Federal Supreme Court (Lausanne). The appeal challenges the FOJ's extradition order on grounds of treaty compliance, dual criminality, and human-rights violations. Strict filing deadlines apply — typically 10 days from the FOJ's decision.

The Swiss extradition appeal process is the judicial stage of the extradition framework, where the courts review the FOJ's administrative decision. The Federal Criminal Court in Bellinzona is the first instance for extradition appeals, and the Federal Supreme Court in Lausanne is the final instance. The process is judicial — the courts assess the legal and factual basis of the FOJ's decision, and they can overturn it on legal grounds.

The Swiss Appeal Process

  1. FOJ decision: The FOJ issues an extradition order. The decision is reasoned and must be communicated to the person and to counsel.
  2. Appeal to the Federal Criminal Court (Bellinzona): The appeal must be filed within 10 days of the FOJ's decision. The court reviews the legal and factual basis — treaty compliance, dual criminality, human-rights compliance, and procedural defects. The court can uphold, overturn, or remand the decision.
  3. Appeal to the Federal Supreme Court (Lausanne): In some cases, the Federal Criminal Court's decision can be further appealed to the Federal Supreme Court. The Supreme Court's review is typically limited to legal questions of fundamental importance.

Critical Warning

The 10-day deadline for appealing to the Federal Criminal Court is strict. Missing the deadline results in the FOJ's decision becoming final, and the person can be extradited. Counsel must be engaged immediately upon the FOJ's decision to prepare and file the appeal within the deadline.

The Federal Criminal Court's Review

The Federal Criminal Court (Bundesstrafgericht) in Bellinzona is the first instance for extradition appeals. The court reviews the FOJ's decision on both legal and factual grounds. The review covers treaty compliance (does the extradition request meet the requirements of the applicable treaty and the IMAC?), dual criminality (is the conduct criminal in both Switzerland and the requesting state?), human-rights compliance (would extradition violate Article 3 or Article 6 of the ECHR?), and procedural correctness (did the FOJ follow the correct procedure?).

The court can uphold the FOJ's decision (extradition proceeds), overturn it (the person is released), or remand it for further consideration (the FOJ must address specific defects). The decision is reasoned and must be communicated to counsel. The appeal must be filed within 10 days of the FOJ's decision — a strict deadline that leaves no room for delay.

The appeal is a full review, not a deferential one. The court does not assume the FOJ's decision is correct; it assesses the legal and factual basis independently. This means that a well-prepared appeal can overturn an FOJ decision that was based on insufficient analysis of dual criminality, inadequate human-rights assessment, or procedural errors. Counsel prepares the appeal with the same rigour as the original defence, citing treaty provisions, ECHR jurisprudence, and Swiss federal court precedents.

The Federal Supreme Court's Limited Review

In some cases, the Federal Criminal Court's decision can be further appealed to the Federal Supreme Court (Bundesgericht) in Lausanne. The Supreme Court's review is typically limited to legal questions of fundamental importance — it does not re-examine the facts, and it does not hear every case. The Supreme Court decides whether to accept the appeal based on the legal significance of the question raised.

Where the Supreme Court accepts the appeal, it can overturn the Federal Criminal Court's decision on legal grounds. The decision is final — there is no further appeal within Switzerland. At this stage, the only remaining option is an application to the European Court of Human Rights (ECtHR) in Strasbourg, if the extradition would violate the ECHR. The ECtHR can issue an interim measure under Rule 39, temporarily blocking the extradition while it considers the application.

The 10-Day Deadline

The 10-day deadline for appealing an FOJ extradition decision to the Federal Criminal Court is strict and non-extendable. Missing the deadline results in the FOJ's decision becoming final, and the person can be extradited. The deadline runs from the date the FOJ's decision is communicated to the person or to counsel, and it includes weekends and holidays (though the deadline is extended to the next business day if it falls on a weekend or holiday).

The strict deadline means that counsel must be prepared to file the appeal immediately upon receiving the FOJ's decision. The appeal cannot be drafted from scratch in 10 days — it must be based on the defence strategy developed during the FOJ proceedings, with the legal arguments and evidence already prepared. This is why engaging Swiss counsel at the earliest stage of the extradition process — not after the FOJ decision — is critical. Counsel who has been involved from the beginning can file the appeal within the deadline, because the arguments are already developed.

What to Do in Practice: Secure Your Clearance

Swiss extradition appeals go to the Federal Criminal Court (Bellinzona) and the Federal Supreme Court (Lausanne). Strict deadlines apply — the appeal must be filed within 10 days of the FOJ's decision. If you face extradition from Switzerland, engage Swiss counsel immediately and file the appeal within the deadline. A parallel CCF deletion petition addresses the underlying Interpol notice.

If you suspect your name is on an international watchlist or have an upcoming flight, do not leave your freedom to chance at a passport terminal. A confidential Interpol lookup or a comprehensive Pre-Travel Legal Check filed through Swiss legal counsel secures absolute clarity within days. Contact our Basel office confidentially to secure your legal travel shield.

N. Silinevics
Nils Silinevics Interpol & Extradition Counsel · Valken Legal AG