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Regulatory litigation in Brazil and lawsuits against agencies
A fine, a suspension or a new rule can change operations overnight. Judicial review of the act has deadlines that do not wait.
Regulatory litigation is the court defense of companies against acts of regulatory agencies and other public bodies, such as fines, license revocations, restrictive rules and unlawful requirements. Engage a lawyer when you receive an infraction notice, an adverse administrative decision or a rule that affects operations, because deadlines are short, like the 120 days for a writ of mandamus.
Regulatory litigation in Brazil takes the conflict between a company and its regulator to the courts. A lawsuit against a regulatory agency may challenge a fine, a suspension of activities, a license revocation, an unlawful requirement or a rule issued without due process.
The subject requires both a legal and a sector reading. Federal agencies follow Law 13,848/2019 (the general law on Brazilian regulatory agencies), which sets rules for decision-making, regulatory impact analysis and public consultation. As federal autonomous entities, agencies are, as a rule, sued in the Federal Courts (art. 109, I, of the Constitution), and they have double time to respond (art. 183 of the Code of Civil Procedure, CPC).
We treat the relationship with the regulator as ongoing. A lawsuit is a tool, not a rupture. We assess the impact of the dispute on the company's institutional relationship, on the next inspection and on the authorization requests still to come.
When to call a lawyer
Significant infraction notice or fine
The company has been fined and must choose between an administrative defense, payment or a court challenge, with a direct effect on cash and reputation.
Final adverse administrative decision
Once the administrative stage is over, the decision takes effect and may lead to enrollment as government debt (dívida ativa) or restrictions on the activity.
New rule affecting operations
A resolution or ordinance creates an obligation, limit or cost the company considers unlawful, or was issued without public consultation and impact analysis.
Authorization at risk
A stalled license application, a requirement not provided by law or a pending revocation proceeding threaten business continuity.
What happens when you put it off
- Lapse of the writ of mandamus: the right to file it expires 120 days after notice of the act (art. 23 of Law 12,016/2009, the Writ of Mandamus Act).
- Missed deadlines: administrative deadlines and the 15 business days for court appeals keep running during talks with the agency.
- Asset freezes: an unpaid fine can be enrolled as government debt and collected through tax-style enforcement proceedings, with seizure of accounts and assets.
- Adverse precedent: a ruling against the company may be used by the regulator as a reference for the entire sector.
How we work
Review of the act and the proceeding
Examination of the decision-maker's authority, the reasoning and the administrative proceeding behind the act, in light of Law 9,784/1999 (federal administrative procedure) and sector rules.
Choice of remedy
Selection among writ of mandamus, annulment action, declaratory action or another route, considering the evidence needed, deadlines and desired effects.
Urgent relief
When appropriate, urgent relief to suspend the effects of the act, observing the legal restrictions on injunctions against the government (art. 1,059 CPC).
Technical handling
Arguments that combine law and sector regulation, with technical opinions when the dispute involves methodology, calculations or economic impact.
Institutional relationship
Monitoring of the regulator's reaction, with parallel technical dialogue and strategy adjustments to protect future authorizations.
What you receive
- Opinion on the legality of the act and the available challenges
- Control of the 120-day writ of mandamus deadline and administrative deadlines
- Petition with an urgent relief request ready to file
- Map of sector precedents in the competent court
- Impact report for management and the compliance team
Why the firm
Integrated regulatory advisory
The litigation team knows the sector's licensing and inspection routine, which reduces errors in reading the rules.
Regulated sectors every day
Work in healthcare, betting, infrastructure and other markets under federal and state regulation.
Strategy that preserves the relationship
Litigating when necessary, without turning the regulator into a permanent adversary.
Illustrative scenario
Hypothetical scenario, for illustration only. An operator in a regulated market receives a decision suspending its authorization based on a recent rule issued without public consultation. The suspension would have an immediate effect on contracts and jobs. In this scenario, the work would start by analyzing the proceeding that produced the rule and the reasoning of the decision. A writ of mandamus, within the legal deadline, and a lawsuit with a request for urgent relief would be assessed, with the route chosen according to the available evidence. In parallel, the company would keep a technical dialogue with the agency. The outcome would depend on the courts. The work would seek to reduce harm while the dispute continues.
A hypothetical scenario, shown only to illustrate our method. Every case depends on its own facts.Frequently asked questions
What is regulatory litigation in Brazil and how does a lawsuit against an agency work?
It is a court challenge to an agency act, filed in the Federal Courts when the agency is federal, or a writ of mandamus when documentary evidence of the right is already available. The choice depends on the act, the evidence and the urgency. First, the administrative proceeding behind the decision must be reviewed.
What is the deadline to file a writ of mandamus against an agency act?
The deadline is 120 days from notice of the act, under art. 23 of Law 12,016/2009. A request for reconsideration at the administrative level does not interrupt this period (STF Precedent Summary 430). Once it expires, ordinary lawsuits are still available.
Must administrative remedies be exhausted before going to court?
As a rule, no, because the Constitution guarantees access to the courts (art. 5, XXXV). However, a writ of mandamus is not available against an act subject to an administrative appeal with suspensive effect and no bond requirement (art. 5, I, of Law 12,016/2009). In some cases, the administrative defense is also strategically useful.
Can a fine imposed by a regulatory agency be suspended?
Yes, through urgent relief or an injunction in a writ of mandamus, when there is a likelihood of the right and risk of harm. In some cases, securing the amount in court also prevents collection while the merits are discussed. Each route has its own requirements and should be chosen case by case.
Which courts hear lawsuits against federal regulatory agencies?
As a rule, the Federal Courts, because agencies are federal autonomous entities (art. 109, I, of the Constitution). The competent judicial section depends on the applicable jurisdiction rules, which in certain cases allow the plaintiff's domicile. The agency has double time to respond (art. 183 CPC).
Does suing the regulator harm the company's relationship with it?
Not necessarily. Judicial review of administrative acts is a normal part of the rule of law, and agencies deal with it frequently. What helps is litigating with technical arguments, an institutional tone and parallel dialogue with the agency.
Related matters
Other matters in this area
Received a fine or a decision from the regulator?
Send us the act and the date you were notified. We will calculate the deadlines, including the 120 days for a writ of mandamus, and indicate the right remedy.