Ivan B. Ahlert
About Ivan B. Ahlert
Ivan B. Ahlert is a lawyer based in Rio de Janeiro, BR and has been recognized in The Best Lawyers in Brazil™ since 2020. Ivan B. Ahlert is recognized in the following practice area:
- Rio de Janeiro, Brazil
- Intellectual Property Law
Current Firm: Dannemann Siemsen Advogados
Location: Rio de Janeiro, BR
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
Gustavo André Muller Brigagão Practice Area Tax law with emphasis on administrative litigation and indirect taxation, dealing with matters related to industry, commerce and services sector, focused in on the oil industry, telecommunication market, e-commerce, electric energy, information technology, clothing industry, professional entities, among others. In addition, he has been deeply involved with the tax structuring of major sporting and entertainment events in Brazil (2014 W...
Pedro DeRegina is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Pedro, who practices law in Rio de Janeiro, Brazil, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Pedro is held by other top lawyers in the same geographic and legal practice area.
Founding partner of Vivacqua Advogados has over 20 years of practice, focused on tax and legal matters related to business issues. Former Administration Subsecretary of the Rio de Janeiro Municipal Secretariat for Housing & Citizenship and Board Member of the Business Council for Legal Affairs of the Commercial Association of Rio de Janeiro. Was Chief Legal Officer – CLO of “NELTUR - Niterói Empresa de Lazer e Turismo S/A”, President of Legal Bridge Brasil and Mem...
Ana Tereza Basilio is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Ana Tereza, who practices law in Rio de Janeiro, Brazil, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ana Tereza is held by other top lawyers in the same geographic and legal practice area.
Leticia Domingues Magalhães is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Leticia Domingues, who practices law in Rio de Janeiro, Brazil, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Leticia Domingues is held by other top lawyers in the same geographic and legal practice area.
Fernando Novis is a top attorney recognized by Best Lawyers in the practice areas of Arbitration and Litigation. Fernando, who practices law in Brazil, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fernando is held by other top lawyers in the same geographic and legal practice areas. Fernando has over 16 years' experience of representing Brazilian and foreign clients in Civil, Corporate, Commercial, Regulator...
Pedro Grillo is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Pedro, who practices law in Rio de Janeiro, Brazil, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Pedro is held by other top lawyers in the same geographic and legal practice area.
Joanna Bastos is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Joanna, who practices law in Rio de Janeiro, Brazil, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joanna is held by other top lawyers in the same geographic and legal practice area.
Luís Carlos Ferreira dos Santos Junior is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Luís Carlos, who practices law in Rio de Janeiro, Brazil, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Luís Carlos is held by other top lawyers in the same geographic and legal practice area.
Creuza de Abreu Vieira Coelho is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Tax Law. Creuza de Abreu, who practices law in Rio de Janeiro, Brazil, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Creuza de Abreu is held by other top lawyers in the same geographic and legal practice area.
Explore and Learn
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore
by Jamilla Tabbara
Market drivers, diversity trends and the elite practitioners shaping the legal landscape.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Can a Green Card Be Revoked?
by Bryan Driscoll
Revocation requires a legal basis, notice and the chance to respond before status can be taken away.
New Texas Family Laws Transform Navigating Divorce, Custody
by Bryan Driscoll
Reforms are sweeping, philosophically distinct and designed to change the way families operate.
How Far Back Can the IRS Audit You?
by Bryan Driscoll
Clear answers on IRS statutes of limitations, recordkeeping and what to do if you are under review.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
Can You File Bankruptcy on Credit Cards
by Bryan Driscoll
Understanding your options for relief from overwhelming debt.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.
Anthropic Class Action a Warning Shot for AI Industry
by Bryan Driscoll
The signal is clear: Courts, not Congress, are writing the first rules of AI.