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About me

Jefferey Ogden Katz is a Partner at The Patterson Law Firm, LLC and is a leading professional liability litigation lawyer. Mr. Katz has handled numerous professional liability cases throughout the country. Mr. Katz and his firm regularly represents individuals, private and public corporations and law firms in litigation, trials and alternative dispute resolution involving professional liability and disciplinary issues.

Mr. Katz has personally handled numerous legal malpractice and professional liability cases.  Mr. Katz originated and obtained settlement in excess of $10,000,000 in a legal malpractice matter involving complex intellectual property matters. He originated and obtained judgment in the amount of $2,550,377 for a professional athlete in an action involving failed purchase of professional sports franchise.  Mr. Katz has first chaired action against former accountant and advisor which resulted in summary judgment in the amount of $1,386,666 for his professional athlete client.

Mr. Katz has spoken on the subject of professional malpractice and has been the Chair of the Chicago Bar Association Young Lawyers Section of Professional Responsibility Committee since 2009.

Mr. Katz is a graduate of the University of Wisconsin at Madison and Case Western Reserve University School of Law. He is admitted in the state of Illinois, state of Wisconsin, United States District Courts for the Northern District of Illinois, Western District of Wisconsin, Northern District of Indiana, United States Court of Appeals for the Seventh Circuit, and has been admitted Pro Hac Vice in Wisconsin, Indiana, Kentucky and D.C. state courts.


Photos and videos

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Practice areas


  1. Ethics: 100%
    12 years, 150 cases



Hourly ($150-300/hour), contingent (33-40%), Fixed (sometimes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

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Contact info

The Patterson Law Firm LLC

One North LaSalle Street, Suite 2100
Chicago, IL, 60602


WIGood Standing200903/27/2015
ILActive And Authorized To Practice Law200411/12/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Illinois Rising StarsSuper Lawyers2013
Work experience
TitleCompany nameDuration
AttorneyThe Spellmire Law Firm LLC2005 - 2012
Association namePosition nameDuration
American Association for JusticeAffinities Committee2013 - Present
American Association for JusticeRegional Chair-Student Trial Advocacy Competition2012 - Present
American Association for JusticeLaw Schools Committee2012 - Present
American Association for JusticeChair Professional Liability Group2012 - Present
Chicago Bar AssociationChair YLS Professional Responsibility Committee2009 - Present
American Association for Justice, New Lawyers DivisionN/A2005 - Present
American Association for JusticeMember2005 - Present
American Bar AssociationMember2004 - Present
Illinois State Bar AssociationMember2004 - Present
Chicago Bar AssociationMember2004 - Present
Legal cases
Case nameOutcome
Ben Gordon v. Vitalis PartnersJudgment
Scottie Pippen v. Christian Laettner et al.Judgment
Larry Harmon v. Ben Gordon7th Circuit affirmed lower court decision in favor of my client.
See all legal cases 
School nameMajorDegreeGraduated
Case Western Reserve University School of LawLawJD - Juris Doctor2004
University of Wisconsin, MadisonN/ABA - Bachelor of Arts2000
Speaking engagements
Conference nameTitleDate
American Association for Justice Winter Convention 2013Risk Management from the Plaintiff's Perspective2013
American Association for Justice Annual ConventionSo You Want to File a Legal Malpractice Case?2012
ACI/LPL Legal Malpractice ConferenceView from the Plaintiff’s Bar: Adapting Your Claims and Litigation Strategies to New and Innovative Theories Being Brought by Your Adversaries2012
Chicago Bar Association YLS MeetingEthical Considerations Related to Modern Technology2010