Integrity. Commitment. Experience.

At Quaranta P.A., we are trial lawyers for business people. We take cases with the intention of trying them to verdict which we believe can conversely facilitate settlement, if warranted. We do not charge our potential clients for the introductory meeting to learn whether we can be of help. We are committed to tenacious, honest advocacy.

Contact us today if you need legal assistance with any of the following: 

  • Complex Commercial Litigation
    • Shareholder Derivative Claims
    • Partnership Disputes
    • Business Divorces
    • Personal Injury Claims
  • Whistleblower Litigation
    • Property Damage Insurance Claims
  • Residential
  • Commercial
  • Business Interruption
  • Officers and Directors Representation and Litigation
  • Qui Tam Litigation

Call 786-901-5685 today to arrange your free initial consultation

Attorney John Marion Quaranta

Mr. Quaranta is a trial lawyer for business people, focusing his trial practice on complex commercial litigation, including securities, insurance, and employment litigation.  Since 2002, he has been rated AV Preeminent™ (Highest Competency and Ethics Rating from Martindale-Hubbell).  He has been recognized by his peers as a member of the Florida Legal Elite™, Best Lawyers in America™ and SuperLawyers™ for commercial litigation.  In 2017, Mr. Quaranta attained membership into The National Trial Lawyers: Top 100 Civil Plaintiff Trial Lawyers.

In Mr. Quaranta’s 28 years of practice, he has tried cases in federal and state courts throughout Florida, as well as before the NASD, FINRA, and American Arbitration Association.  His clients have ranged from Fortune 500 companies and their officer and directors to small business owners.  He has been general counsel to two U.S. defense contractors.


Attorney Natasha Leanne Biela

Originally from Seattle, Washington, Ms. Biela joined the firm in August 2020. She graduated from the University of Pittsburgh in 2017 with a degree in Biological Sciences, as well as minors in Chemistry and German Language.  She then moved on to earn her law degree at the University of Miami, where she received the Dean’s Merit full academic scholarship, and graduated in May 2020.  During her time at the University of Miami, she served as an intern for the Environmental Justice Clinic, gaining experience in policy, code enforcement, and small government. Natasha also participated in the University’s Litigation Skills Program and served as an extern at the Miami-Dade State Attorney’s office, working in the misdemeanor domestic violence division. Natasha is a Homestead resident who enjoys spending time at home with her two dogs and creating oil and acrylic paintings.


Attorney Michael Maguire

Michael Maguire is a Martindale-Hubbell AV-rated personal injury attorney. He was board certified by The Florida Bar in Civil Trial Law in 1983, and has handled over 2,000 personal injury and wrongful death cases.  Michael has tried over 100 cases to verdict before Florida juries throughout the State.  These cases involve personal injury and wrongful death lawsuits, including aviation, swine flu, automobile, railroad, and product liability matters. He also has extensive experience handling medical and dental malpractice cases. While he specializes in personal injury, he has also tried cases against insurance companies , the federal government, as well as counties and municipalities.  Michael takes cases exclusively on a contingency fee basis, which means he does not get paid unless he achieves a recovery for you.


Attorney Renato Duarte Franco de Moraes

Renato Duarte Franco de Moraes is of counsel to the firm and practices law in his native São Paulo, Brazil.  Mr. Moraes assists the firm in cross-border civil disputes involving Brazilian expatriates living in Florida.  Mr. Moraes is a trial lawyer who focuses his practice on litigating before the federal courts of Brazil and international arbitration proceedings.  Mr. Moraes has expertise in representing clients in complex commercial litigation, cases of fraud, partnership disputes and collection matters.

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