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SPECIALIZED LEGAL CONSULTING

Our team of experienced lawyers combines expertise and agility to resolve your legal matters efficiently across three languages.

15+ Years of experience
1500+ Cases resolved
98% Cases won
15+ Years of experience
1500+ Cases resolved
98% Cases won

Experts in international law

We are a team of specialized lawyers with over 15 years of experience in international legal matters. Our approach is clear: concrete results for every client.

15+ Years of experience
1500+ Cases resolved
3 Languages

The people behind every case

A firm with a structure: every file has a responsible lawyer, a litigation team that takes it to court, a dedicated unit for government agencies and regularisation, and a back office that tracks deadlines and communication.

Andrei Tchestnykh

Andrei Tchestnykh

Founder · Managing partner · Lead attorney

A lawyer with more than 17 years of practice in Argentina. He specialises in complex legal situations across the firm’s core areas:

  • Citizenship and immigration litigation
  • Criminal defence
  • Family disputes and defence of rights in court
  • International cases and extradition
  • Company formation and ongoing legal support for business

He personally sets the strategy for every case and handles its key stages — from the first filing to the final judgment. He steps in where paperwork is not enough and the case calls for defence, strategy, and control of the outcome.

Clients come to him when "the standard solutions don’t work".

Georgiy Sizov

Georgiy Sizov

Head of litigation

Leads the litigation practice and is responsible for running every case before the courts, assisting the attorney at hearings and in proceedings.

The entire court-side operation rests on his work: drafting procedural filings, tracking deadlines, and coordinating every proceeding.

He organises the work so that the case strategy is carried out in court precisely and without slippage.

Anastasia Solovieva

Anastasia Solovieva

Client care · Process coordination

Responsible for communication between the client and the team at every stage of the work.

She receives requests, structures them into tasks, and passes them to the right specialist, tracking both delivery and feedback.

She makes sure the client always knows the status of the case, what is being done, and what comes next.

She works with the support of FLORENCIA, the firm’s internal AI assistant, which speeds up request handling and communication.

She keeps the process transparent and predictable for the client.

Andrei Morozov

Andrei Morozov

Immigration · Government agencies · Financial integration

Responsible for all dealings with government bodies: Migraciones, AFIP/ARCA, RENAPER, and CONARE.

Guides the client through every stage of regularisation: assembling documents, obtaining statuses, tax registration, opening a Monotributo, and obtaining a CUIT/CUIL.

He also takes part in the financial side of client support alongside the firm’s accountant, ensuring a proper integration into the country’s economic system.

Also on the team

Ekaterina Starkova

Head of back office

Leads the team’s internal processes and is responsible for keeping the whole system running smoothly.

Oversees document management, deadlines, administrative procedures, and the internal coordination of every case.

She makes sure every task is completed on time, with no lost information and no organisational failures.

Her work is what guarantees that a case moves exactly according to plan.

Juan José Pogio

Accounting · Financial and tax management · Outsourcing

The team’s accountant provides full support for clients’ financial and tax matters:

  • Bookkeeping and tax accounting
  • Monotributo and tax obligations
  • Dealings with AFIP/ARCA
  • Reporting, filings, and advice

Accounting outsourcing is also available for clients running a business in Argentina.

Our practice areas

Select an area to see detailed services and descriptions of each type of case we handle.

Naturalization, temporary and permanent residency, refugee status, appeals against the DNM and constitutional litigation over DNU 366/2025.

Judicial processing of the naturalization procedure before the federal court: gathering requirements, filing and hearing. For those who meet the residency period and wish to obtain Argentine citizenship.

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Processing temporary residency for work, study, family reunification or humanitarian reasons before the National Migration Directorate and the federal administrative court.

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Obtaining permanent residency in Argentina, including administrative and judicial appeals against denials or unjustified delays by the DNM.

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Procedures to reunite with close relatives in Argentina: spouse, minor children and parents. Filing with the DNM and judicial appeals when family residency is denied or delayed.

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Advisory and representation in refugee status recognition requests before the CONARE and in humanitarian visas for urgent or special protection cases.

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Challenging National Migration Directorate decisions: administrative reconsideration and hierarchical appeals, and judicial action before the federal administrative court.

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Strategic litigation against DNU 366/2025 which amended the Migration Law. Unconstitutionality actions, individual and class injunctions defending the right to residency and equality.

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Advisory on recovering or acquiring dual nationality — Argentine, Spanish, Italian or others — through descent, naturalization or international treaties.

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Divorces, alimony, custody, domestic violence and inheritance — handled with sensitivity and rigor.

Processing divorce proceedings, whether by mutual agreement or contested, with negotiation or litigation over the settlement: support, housing, assets and child custody.

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Setting, increasing, reducing or terminating support payments for minor or entitled adult children. Includes precautionary measures to secure payment and enforcement of judgments.

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Setting or modifying visitation and communication schedules between parents and children. Intervention for non-compliance, obstruction of contact and changes of residence.

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Actions to establish or contest filiation, determination of paternity, and full or simple adoption proceedings at all stages.

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Liquidation of marital property or assets from a cohabitation union. Partition agreement or co-ownership division lawsuit when the parties cannot agree.

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Urgent protective measures in domestic or gender-based violence situations: exclusion from the home, restraining orders, panic button and coordinated criminal complaint.

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Registration, rights and obligations of the cohabitation union (unión convivencial). Cohabitation agreements, protection of the family home and dissolution with asset liquidation.

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Opening and processing estate proceedings: declaration of heirs, estate administration, inheritance partition and resolution of conflicts among co-heirs.

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24/7 emergency legal assistance. Criminal defense, financial crimes, private prosecution and oral trial in federal and provincial courts.

A criminal charge demands immediate professional response. Every procedural act — from the first statement to the final plea — can be decisive. Comprehensive criminal defense covers all stages: investigation, intermediate, oral trial and appeals. We apply the constitutional guarantee of defense in court: evidence control, nullity motions, presenting own evidence and appeals at each level.

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Freedom during proceedings is the rule; pretrial detention is the exception — so establish the Constitution, the American Convention on Human Rights and Supreme Court doctrine. We handle all release modalities: sworn, personal or property bail; exemption from imprisonment; substitution with house arrest or electronic monitoring; and termination of pretrial detention for expiration of reasonable time (Law 24.390).

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When you are the victim of a crime, the criminal system moves on its own only in a limited way. Argentine law (arts. 82 et seq. CPPN) grants victims the right to become private complainants: an autonomous party with the right to advance the investigation, submit evidence, control prosecution decisions and fully participate in the oral trial. The complainant may sustain independent accusation even when the prosecutor is inactive (CSJN Santillán).

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Sexual crimes (arts. 119 et seq. CP) and gender-based violence require technical rigor and sensitivity. We represent both victims and accused with separate teams. The prosecution drives the investigation, coordinates specialized hearings and psychological evaluations.

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Property crimes (arts. 162–185 CP) range from theft and robbery to fraud, embezzlement, extortion and illegal occupation. Today they increasingly involve digital technology and crypto assets: computer fraud (art. 173 inc. 16 CP), card fraud, digital wallet hacks and platform manipulation. We assist victims as complainants and the accused in their defense, with expert accountants and digital forensics specialists.

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Financial criminal law combines Penal Code provisions with special laws: criminal tax liability regime (Law 27.430), money laundering (Law 26.683), Customs Code and corporate criminal liability (Law 27.401). We handle tax evasion, money laundering, smuggling and corporate criminal responsibility, working together with accountants and financial experts.

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Oral trial is the decisive stage: evidence is produced, versions clash and the verdict is rendered. We provide rigorous preparation: debate strategy, cross-examination of witnesses and experts, closing arguments. When the verdict is unfavorable, we appeal by cassation before the Federal Criminal Cassation Chamber, then by extraordinary federal appeal before the Supreme Court. Defense continues throughout sentence execution: temporary releases, parole and supervised release.

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Sales, rentals, due diligence, mortgages, gated community disputes and real estate inheritance.

Review and drafting of purchase contracts, deeds and reservation agreements. Registry and tax due diligence. Representation throughout the entire real estate transaction chain.

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Registry, cadastral and urban planning investigation of the property before purchase: encumbrances, liens, maintenance fee and property tax debts, title status and precautionary measures.

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Drafting and reviewing lease agreements under Law 27.551. Rent adjustments, early terminations and resolution of landlord-tenant disputes.

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Processing eviction proceedings for non-payment, contract expiry, unlawful occupation or other grounds. Precautionary measures and pre-trial notices to expedite property recovery.

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Advisory to property owners and homeowner associations on horizontal property disputes, co-ownership rules, unpaid maintenance fees and litigation in country clubs and private neighborhoods.

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Mortgage establishment, cancellation and foreclosure. Negotiation with mortgage creditors and defense in enforcement proceedings. Substitution and release of real property guarantees.

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Processing estates that include real property: estate determination, provisional administration, partition and title transfer to the heirs.

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SAS/SRL/SA companies, contracts, INPI trademarks, consumer defense and comprehensive business advisory.

Formation of SAS, SRL and SA companies: drafting of bylaws, filings with the General Justice Inspectorate (IGJ) and advisory on the most suitable corporate structure for each project.

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Registration and modifications with AFIP: monotax regime, self-employed (autónomo) status and CUIT for individuals and legal entities. Basic tax advisory and coordination with accountants.

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Drafting and reviewing distribution, franchise, agency, supply, service and confidentiality contracts. Negotiation and out-of-court resolution of commercial disputes.

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Mediation and litigation in disputes among partners: challenging shareholder meetings, expulsion of partners, accounting demands and dissolution of companies with or without agreement.

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Trademark registration with INPI, brand monitoring, oppositions and nullity or lapse actions. Advisory on industrial and intellectual property for companies and entrepreneurs.

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Claims before GCBA, OMIC and provincial agencies. Legal actions for consumer damages, misleading advertising and abusive clauses in adhesion contracts.

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Continuous legal support for SMEs and startups: contracts, compliance, labor relations, legal risk management and growth strategy with legal certainty.

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Extradition, international child abduction (Hague Convention), apostille, exequatur and cross-border transactions.

Representation in active and passive extradition proceedings before the federal courts. Analysis of bilateral and multilateral treaties, dual criminality review and due process guarantees.

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Actions under the 1980 Hague Convention for the return of children wrongfully removed or retained abroad, and defense against return requests directed at residents in Argentina.

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Processing apostilles with the Argentine Ministry of Foreign Affairs and consular legalizations for Argentine or foreign public documents intended for use abroad.

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Recognition and enforcement in Argentina of foreign judgments and arbitration awards through the exequatur procedure before the Supreme Court or the competent federal courts.

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Processing estates with multinational elements: determination of applicable law, recognition of foreign wills and coordination with professionals in other jurisdictions.

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Drafting and reviewing contracts with foreign parties: choice of law and forum, international arbitration clauses and adaptation to cross-border trade standards.

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State appeals, injunctions (amparo), sanctions, permits and access to public information.

Drafting and filing reconsideration and hierarchical appeals before national, provincial and municipal agencies. Representation through exhaustion of all administrative remedies.

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Amparo action for injury, restriction, alteration or threat to constitutional rights by State acts or omissions. Precautionary measures to immediately suspend the harmful act.

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Challenging fines and administrative sanctions before AFIP, DGR, GCBA, municipalities and regulatory bodies. Administrative appeals and administrative court lawsuits.

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Processing commercial permits before GCBA and municipalities. Appeals against denials, closures and sanctions. Expediting files delayed by state inactivity.

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Public information access requests under Law 27.275. Appeals against denials or state silence. Amparo for access to information on matters of public interest.

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Prompt dispatch motions and judicial actions against administrative silence. Control of reasonable deadlines in administrative proceedings delayed without resolution.

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Health injunctions, insurance disputes, disability, medical malpractice and high-cost medications.

Amparo action to guarantee urgent medical services denied by health insurance funds, private insurers or the State. Precautionary measures to obtain immediate coverage of treatments or medications.

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Claims for denial or reduction of benefits against health funds (obras sociales) and private medical insurers (prepagas). Administrative appeals before the Health Services Superintendency and judicial actions.

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Processing the Unique Disability Certificate (CUD) and access to the Basic Benefits System for people with disabilities: education, rehabilitation, transportation and family support.

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Representation in medical malpractice cases: surgeries, delayed diagnoses, hospital infections and medical negligence. Coordination with medical experts to prove damage and liability.

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Advisory on rights under Law 26.657: voluntary and involuntary admissions, informed consent, medical discharge and substitution of consent for persons with restricted legal capacity.

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Amparo or precautionary measure to obtain oncological, monoclonal or other high-cost medications denied by the health insurer, with urgent processing before the federal civil and commercial court.

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Message us on whichever app you prefer — we reply within one business day. The first consultation is free.