Litigation Partner
Wiley Rein LLP
Washington | Batimore, District of Columbia
Litigation Partner at Wiley Rein LLP

Tatiana combines high-level experience in complex litigation and arbitration with a deep understanding of international, comparative, and human rights law to assist clients in avoiding, navigating, and resolving disputes involving investments in emerging markets, space and satellite technology, renewable energies, and the healthcare sector.
Named to “DC's Power Women of Law” List by DCA Live (2024), Tatiana specializes in developing a comprehensive understanding of her clients’ business goals and needs to craft tailored strategies to win high-stakes, bet-the-company litigations and arbitrations, adhere to internal and external stakeholder expectations, and avoid incurring reputational or operational risk.
Prior to joining Wiley, Tatiana served as a Legal Adviser to Judge Rosemary Barkett on the Iran-United States Claims Tribunal in the Hague, advising on complex, politically sensitive state-to-state cases, and as a law clerk to the Honorable M. Margaret McKeown, U.S. Court of Appeals for the Ninth Circuit.
Wiley Rein LLP
Washington | Batimore, District of Columbia
Dechert LLP
Washington | Batimore, District of Columbia
Court of Appeals for the Ninth Circuit
(appointed)California Southern District
Served as judicial law clerk to the Honorable M. Margaret McKeown, researching and drafting opinions, orders, and bench memoranda.
Iran-United States Claims Tribunal, The Hague
(appointed)Netherlands
Assist U.S. Arbitrators in all aspects of Tribunal practice by preparing bench memos, drafting deliberation papers, and researching international arbitration practice, public and commercial international law, and domestic U.S. and Iranian law.
Business and Professional People for the Public Interest
Chicago, Illinois
Researched and analyzed implementation of right to housing and right to education in Chicago.
Duke AIDS Policy Project
Durham, North Carolina
Conducted education and outreach to inform communities, advocates and health care providers about the Affordable Care Act (ACA); researched and analyzed the impact of the ACA on vulnerable and at-risk populations.
Duke AIDS Legal Project
Durham, North Carolina
Represented multiple clients in standby guardianship, discrimination and disability proceedings.
Documentation Center of Cambodia
Phnom Penh, Cambodia
Prepared an independent, article-length memorandum on the role of the Co-Investigating Judges at the Extraordinary Chambers in the Courts of Cambodia (ECCC); memorandum was submitted to the Court’s Trial Chamber as a resource to assist in determining the scope of the duty to investigate crimes in cases before the Court.
Adapted memorandum for publication in DC-Cam’s monthly magazine.
Monitored and reported on the trials currently ongoing before the Court.
Conducted interviews and trainings as part of DC-Cam’s “Victim Education Project” to teach survivors of the Khmer Rouge about their rights before the ECCC, and to collect stories from victims and survivors.
ECHO Minnesota
St. Paul, Minnesota
Managed production of multimedia educational health and civic education programming in 12 languages.
Coordinated outreach efforts to identify and address refugee communities’ key health and education concerns.
Developed and implemented effective marketing strategies to increase awareness of ECHO’s work.
MKDM
Charlottesville, Virginia
Developed and executed turnkey marketing and fundraising campaigns for social service and advocacy nonprofits.
Jumpstart
Charlottesville, Virginia
Coached team, led educational activities and implemented strategies to improve student achievement
May 2025
Regularly assists clients in navigating and successfully resolving investigations and consumer class actions regarding false advertising, consumer protection and privacy, and environmental laws at the state and federal levels. Represents a real estate developer in a Singapore-seated arbitration to resolve disputes involving the construction of a planned city. Represents a shipping and mining company in a commercial arbitration, seated in Geneva, in a dispute involving sovereign cargo rights. Secured a favorable settlement for a renewable energy company in parallel arbitration proceedings, seated in London and Singapore, arising from a dispute involving the sale and marketing of proprietary technologies in the Asian market. Successfully defended a multinational defense contractor in parallel proceedings in foreign and U.S. courts in multiple disputes related to Foreign Military Sales Program contracts. Secured a victory for a large Central European oil and gas company in parallel arbitration proceedings involving Fair and Equitable Treatment (“FET”) claims and corruption allegations under the Energy Charter Treaty. Significantly reduced the damages awarded to a mining company on behalf of sovereign client in dispute alleging breach of the FET standard. Secured a favorable settlement for a satellite company in an ICC arbitration with an intergovernmental organization concerning funding obligations and licensing rights. Conducted internal investigations to lay groundwork for arbitrations involving multiple sovereign states and novel issues of jurisdiction and sovereign immunity. Advises health care companies in disputes with pharmacy benefits managers, including developing winning strategies to enforce rights and obligations arising from PBM Agreements. Conducts internal audit and provides recommendations to major health insurer to avoid reputational, operational, or litigation risk in connection with allegations of potential antitrust violations.
Benchmark Litigation guide
May 2025
Included in Benchmark Litigation guide as a “Litigation Star” (2023-2024), a “Future Star” (2024-2025), and named to the Guide's “40 & Under” List
The Best Lawyers in America directory
May 2025
Included in The Best Lawyers in America directory of “Ones to Watch” for Commercial Litigation (2021-2025) and Alternative Dispute Resolution (2023-2025)
DCA Live
May 2025
Named to “DC's Power Women of Law” List by DCA Live (2024)
Energy Law Report
April 2025
LinkWiley.law
February 2025
On February 5, newly confirmed Attorney General Pam Bondi issued a series of guidance documents refocusing U.S. Department of Justice (DOJ) priorities for the new Administration. In addition to effectuating many of President Trump’s Executive Orders, Attorney General Bondi reinstituted prior Trump Administration guidance, established working groups and task forces, and reallocated Department resources. Importantly, many Executive Orders impact enforcement priorities and DOJ components tasked with traditional white collar enforcement. With more changes likely coming, companies should evaluate whether these policy changes could impact ongoing or future matters with the Department as well as existing compliance programs.
Wiley.law
January 2025
On January 24, 2025, the Trump Administration asked the U.S. Supreme Court to pause briefing in several cases on the current merits docket. In making the request, Acting Solicitor General Sarah Harris explained that the new Administration needs to reevaluate prior agency positions in three cases involving the U.S. Environmental Protection Agency and one case involving the U.S. Department of Education.[1] These requests could signal a departure from the outgoing Administration’s policies and legal positions in cases pending before the Supreme Court, and may provide critical insights into the new Administration’s legal and policy agenda.
The American Bar Association's Litigation Journal
December 2024
LinkLaw360
August 2023
LinkWiley.law — PODCAST
May 2025
Join hosts Diana Shaw and Tatiana Sainati as they explore the captivating and controversial life of the current head of the Chechen Republic. In this episode, they unpack one man's rise to power, including his opulent lifestyle and the dark underbelly of his regime. From lavish palaces and exotic pets to allegations of human rights abuses and corruption, this episode uncovers the many facets of a leader who is equal parts bling, violence, nationalism, and religion. Discover how this cult of personality has shaped Chechnya and the implications for its future.
Wiley.law — PODCAST
April 2025
Join hosts Tatiana Sainati and Diana Shaw as they delve into the harrowing history of corruption and violence in the Republic of Equatorial Guinea. Discover how a single political family managed to siphon off the nation's vast oil wealth and amass an astonishing portfolio of assets, including 11 luxury sports cars, lavish mansion estates, and a collection of Michael Jackson memorabilia. Tune in to learn about the international efforts to hold these kleptocrats accountable.
Wiley.law — PODCAST
March 2025
LinkWiley.law — PODCAST
February 2025
Join hosts Tatiana Sainati and Diana Shaw as they delve into the gripping story of General Sani Abacha, the Nigerian dictator who embezzled billions of dollars and ruled with an iron fist from 1993 to 1998. Known for his ruthless tactics, including a personal security force trained in North Korea and the violent suppression of opposition members, Abacha's relentless pursuit of wealth and power ultimately led to his downfall. Tune in to learn more about the international efforts to recover Nigeria's stolen wealth and the lasting impact of Abacha's regime on the country.
Wicked Coin — PODCAST
December 2024
Join hosts Diana Shaw and Tatiana Sainati as they delve into the gripping tale of Operation Car Wash, one of the largest corruption scandals in history. Discover how a small money laundering investigation into a car wash unraveled a web of institutionalized crime, reaching the highest levels of Brazil's political and commercial spheres.