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 Complex Civil Litigation 
MDL 2179 - Oil Spill by the Oil Rig "Deepwater Horizon"


Joseph ("JoJo") Tann was retained to work with the court-appointed neutrals in MDL - 2179 Oil Spill by the Oil Rig "Deepwater Horizon". Serving as liaison counsel to the neutrals, JoJo personally communicated with hundreds of law firms and pro se plaintiffs to help navigate them through the Neutrals Process. Ultimately, the Court-Appointed Neutrals Process reached settlements with some 20,000 claimants. The aggregate amount of these settlements is roughly $5.1 billion.

MDL 2804 - National Prescription Opiate Litigation

JoJo represents local governments in MDL - 2804 In Re: National Opiate Litigation. He was one of the principal architects and lead negotiators of the One Arizona Distribution of Opioid Settlement Funds Agreement, which achieved 100% participation of all eligible governmental entities and will allocate more than a billion dollars in funding to the State of Arizona and its political subdivisions to be used for opioid education, prevention, and treatment. He is one of the few lawyers individually recognized in each of the multibillion-dollar national opioid settlement agreements for his contributions to the litigation.


Mr. Tann was retained as the official Advisor to the Court-Appointed Fee Panel and subsequently named Executive Director of the National Opioid Contingency Fee Fund. He has allocated $640 million and, in total, expects to allocate and distribute more than a billion dollars in contingency fee payments to the law firms responsible for recovering more than $50 billion from the opioid industry.


Mr. Tann also serves as the court-appointed Special Master in the Alabama Opioid Litigation. As Alabama Special Master, he has allocated hundreds of millions of dollars to Alabama local governments.

MDL 2193 - In Re: Juul Labs, Inc. Marketing, Sales Practices & Products Liability Litigation


JoJo and his co-counsel represented several of Arizona's largest school districts against JUUL Labs, Inc in MDL 2193 In Re: Juul Labs, Inc. Marketing, Sales Practices & Products Liability Litigation. The legal team reocvered millions of dollars for more than 200 Arizona schools and 185,000 students.



JoJo has significant experience in business litigation, formation, negotiation, corporate finance, contracts, operating agreements, partnership agreements, corporate by-laws, corporate governance, corporate social responsibility, mediation, arbitration, mergers, acquisitions, and general business law. 



  Real Estate 


JoJo has more than ten years' experience as a landlord and is well-versed in both common and complex issues faced by commercial and residential property owners. He has helped to form several commercial real estate partnerships and joint ventures. 


Please note - Mr. Tann is not accepting new clients at this time

​​​​© 2021 by Law Office of Joseph C. Tann, PLLC Important notice: None of the information contained herein is meant to be legal advice nor does it give rise to an attorney-client relationship. You should not act or fail to act, based upon the information provided here without first seeking legal counsel. An attorney client relationship will only be formed upon us entering into a formal written agreement. Mr. Tann is licensed to practice law in the State of Arizona.

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