About Gregory
Greg represents clients in the prosecution and defense of complex commercial litigation. His extensive experience in commercial litigation has prepared him to successfully represent large corporations as well as small businesses and individuals.Greg also has extensive experience representing individuals in inheritance litigation. He has successfully litigated many will contests and trust disputes throughout Wisconsin. Greg has accomplished tremendous results on behalf of trustees, personal representatives, and power of attorneys in large complicated disputes.Greg has appeared in state and federal courts in numerous jurisdictions including California, New York, Texas, Arizona, Oregon, Florida, Illinois, and Washington D.C. Greg is a member of the Wisconsin state and federal courts, Seventh Circuit Court of Appeals, and the United States Supreme Court. Greg also serves as the Chairperson of the firm’s Ethics Committee.Greg Assists Clients WithInheritance LitigationWill ContestsTrust & Estate LitigationComplex LitigationCommercial LitigationPersonal InjuryProducts Liability LitigationInsurance Coverage LitigationClass Action LitigationGeneral Business CounselingContract DisputesTort DisputesAppellate PracticeProfessional Associations & AffiliationsLife Fellow, American Bar FoundationState Bar of WisconsinEastern District of Wisconsin Bar AssociationMilwaukee Bar AssociationWaukesha County Bar AssociationOzaukee Bar AssociationWaukesha County Business AllianceIndependent Business Association of WisconsinCourt AdmissionsWisconsinU.S. District Court, Eastern District of WisconsinU.S. District Court, Western District of WisconsinU.S. Court of Appeals, Seventh CircuitU.S. Supreme CourtVarious other state and federal courts across the U.S. on a pro hac vice basisAwards/DistinctionsNamed 2022 Best Lawyers® “Lawyer of the Year” for Litigation–InsuranceNamed 2022 Attorney of the Year by Top 100 RegistryMartindale-Hubbell® Peer Review Rating™–AV Preeminent, reflecting an attorney who has reached the height of professional excellence and is recognized for the highest levels of skill and integritySelected for inclusion in The Best Lawyers in America®–Commercial Litigation in 2014 and Commercial Litigation and Litigation–Insurance in 2015–presentSelected as a Member of The Nation’s Top One Percent by the National Association of Distinguished Counsel, whose rosters “Consists of the leading legends of the legal profession”Fellow with the American Bar Foundation, membership in which is limited to one-third of one percent of the lawyers in AmericaFor more than 15 years, Law & Politics and Milwaukee Magazine has selected Greg for inclusion in Wisconsin Super Lawyers, a distinction limited to the top 5% of Wisconsin attorneys.Named one of “Milwaukee’s Leading Lawyers,” in 2015, 2016, and 2017 by M Magazine in Litigation. Only 2–5% of the top ranked attorneys published by Avvo for each category were recognizedArticles/PresentationsSpeaker, Milwaukee Chapter of the Society of Financial Service Professionals, “Dealing with Possible Elder Financial Abuse and its Potential Legal Ramifications” (Milwaukee, WI, March 2020)Author, "Wisconsin Supreme Court Determines Statutory Medical Malpractice Cap Constitutional" Meritas Healthcare Newsletter (January 2020)Co-Author “What Happens if My Business Can’t Perform Its Contract Due to the Coronavirus?,” website article (March 19, 2020)Author, "A Trustee’s Duty of Loyalty in Wisconsin," website article (July 31, 2018)Author, "Mental Capacity Issues in Estate Planning Litigation," website article (March 30, 2018)Speaker, O’Neil, Cannon, Hollman, DeJong & Laing, Hot Legal Topics for Small Firms & Solo Practitioners seminar, “Commercial Arbitration: Arbitration in the United States and Abroad” (Milwaukee, WI, October 2015)Speaker, O’Neil, Cannon, Hollman, DeJong & Laing, Hot Ethics Topics for In-House Counsel seminar, “E-Discovery: The New Wisconsin Rules of Civil Procedure and Some Ethical Considerations for Managing Electronically Stored Information” (Milwaukee, WI, December 2010)Speaker, State Bar of Wisconsin and Corporate Practice Institute, Inc., “Legal Ethics: A Review and Update, Including Emerging Issues” (Milwaukee, WI, December 2010)Community InvolvementBoard of Directors–Executive Committee, Secretary, Revitalize MilwaukeeMilwaukee Justice Center, Pro Bono VolunteerMarquette University Law School, Former Member Alumni Association Board of DirectorsUniversity of Wisconsin–Whitewater, Former Member Dean’s Advisory BoardUniversity of Wisconsin–Whitewater, Former Protégé–MentorVarious school and church committeesEducationMarquette University Law School (J.D.)UW Whitewater (B.A., magna cum laude)
Greg represents clients in the prosecution and defense of complex commercial litigation. His extensive experience in commercial litigation has prepared him to successfully represent large corporations as well as small businesses and individuals.Greg also has extensive experience representing individuals in inheritance litigation. He has successfully litigated many will contests and trust disputes throughout Wisconsin. Greg has accomplished tremendous results on behalf of trustees, personal representatives, and power of attorneys in large complicated disputes.Greg has appeared in state and federal courts in numerous jurisdictions including California, New York, Texas, Arizona, Oregon, Florida, Illinois, and Washington D.C. Greg is a member of the Wisconsin state and federal courts, Seventh Circuit Court of Appeals, and the United States Supreme Court. Greg also serves as the Chairperson of the firm’s Ethics Committee.Greg Assists Clients WithInheritance LitigationWill ContestsTrust & Estate LitigationComplex LitigationCommercial LitigationPersonal InjuryProducts Liability LitigationInsurance Coverage LitigationClass Action LitigationGeneral Business CounselingContract DisputesTort DisputesAppellate PracticeProfessional Associations & AffiliationsLife Fellow, American Bar FoundationState Bar of WisconsinEastern District of Wisconsin Bar AssociationMilwaukee Bar AssociationWaukesha County Bar AssociationOzaukee Bar AssociationWaukesha County Business AllianceIndependent Business Association of WisconsinCourt AdmissionsWisconsinU.S. District Court, Eastern District of WisconsinU.S. District Court, Western District of WisconsinU.S. Court of Appeals, Seventh CircuitU.S. Supreme CourtVarious other state and federal courts across the U.S. on a pro hac vice basisAwards/DistinctionsNamed 2022 Best Lawyers® “Lawyer of the Year” for Litigation–InsuranceNamed 2022 Attorney of the Year by Top 100 RegistryMartindale-Hubbell® Peer Review Rating™–AV Preeminent, reflecting an attorney who has reached the height of professional excellence and is recognized for the highest levels of skill and integritySelected for inclusion in The Best Lawyers in America®–Commercial Litigation in 2014 and Commercial Litigation and Litigation–Insurance in 2015–presentSelected as a Member of The Nation’s Top One Percent by the National Association of Distinguished Counsel, whose rosters “Consists of the leading legends of the legal profession”Fellow with the American Bar Foundation, membership in which is limited to one-third of one percent of the lawyers in AmericaFor more than 15 years, Law & Politics and Milwaukee Magazine has selected Greg for inclusion in Wisconsin Super Lawyers, a distinction limited to the top 5% of Wisconsin attorneys.Named one of “Milwaukee’s Leading Lawyers,” in 2015, 2016, and 2017 by M Magazine in Litigation. Only 2–5% of the top ranked attorneys published by Avvo for each category were recognizedArticles/PresentationsSpeaker, Milwaukee Chapter of the Society of Financial Service Professionals, “Dealing with Possible Elder Financial Abuse and its Potential Legal Ramifications” (Milwaukee, WI, March 2020)Author, "Wisconsin Supreme Court Determines Statutory Medical Malpractice Cap Constitutional" Meritas Healthcare Newsletter (January 2020)Co-Author “What Happens if My Business Can’t Perform Its Contract Due to the Coronavirus?,” website article (March 19, 2020)Author, "A Trustee’s Duty of Loyalty in Wisconsin," website article (July 31, 2018)Author, "Mental Capacity Issues in Estate Planning Litigation," website article (March 30, 2018)Speaker, O’Neil, Cannon, Hollman, DeJong & Laing, Hot Legal Topics for Small Firms & Solo Practitioners seminar, “Commercial Arbitration: Arbitration in the United States and Abroad” (Milwaukee, WI, October 2015)Speaker, O’Neil, Cannon, Hollman, DeJong & Laing, Hot Ethics Topics for In-House Counsel seminar, “E-Discovery: The New Wisconsin Rules of Civil Procedure and Some Ethical Considerations for Managing Electronically Stored Information” (Milwaukee, WI, December 2010)Speaker, State Bar of Wisconsin and Corporate Practice Institute, Inc., “Legal Ethics: A Review and Update, Including Emerging Issues” (Milwaukee, WI, December 2010)Community InvolvementBoard of Directors–Executive Committee, Secretary, Revitalize MilwaukeeMilwaukee Justice Center, Pro Bono VolunteerMarquette University Law School, Former Member Alumni Association Board of DirectorsUniversity of Wisconsin–Whitewater, Former Member Dean’s Advisory BoardUniversity of Wisconsin–Whitewater, Former Protégé–MentorVarious school and church committeesEducationMarquette University Law School (J.D.)UW Whitewater (B.A., magna cum laude)
Greg represents clients in the prosecution and defense of complex commercial litigation. His extensive experience in commercial litigation has prepared him to successfully represent large corporations as well as small businesses and individuals.
Greg also has extensive experience representing individuals in inheritance litigation. He has successfully litigated many will contests and trust disputes throughout Wisconsin. Greg has accomplished tremendous results on behalf of trustees, personal representatives, and power of attorneys in large complicated disputes.
Greg has appeared in state and federal courts in numerous jurisdictions including California, New York, Texas, Arizona, Oregon, Florida, Illinois, and Washington D.C. Greg is a member of the Wisconsin state and federal courts, Seventh Circuit Court of Appeals, and the United States Supreme Court. Greg also serves as the Chairperson of the firm’s Ethics Committee.
Greg Assists Clients With
Professional Associations & Affiliations
Court Admissions
Awards/Distinctions
Articles/Presentations
Community Involvement
Education
Practice Areas
Education
Professional Affiliations
Awards & Recognition
- Lawyer of the Year: Litigation - Insurance, Milwaukee (2022)
- Recognized: Commercial Litigation
- Recognized: Litigation - Insurance
- Practice Area: Appellate Practice
- Practice Area: Arbitration
- Practice Area: Bet-the-Company Litigation
- Practice Area: Ethics and Professional Responsibility Law
- Practice Area: Litigation - Banking and Finance
- Practice Area: Litigation - Construction
- Practice Area: Litigation - Land Use and Zoning
- Practice Area: Litigation - Mergers and Acquisitions
- Practice Area: Litigation - Real Estate
- Practice Area: Litigation - Trusts and Estates
- Practice Area: Mass Tort Litigation
- Practice Area: Personal Injury Litigation
- Practice Area: Product Liability Litigation
- Practice Area: Product Liability Litigation - Defendants
- Special Focus: COVID-19
- Special Focus: Product Liability
- Named 2022 Best Lawyers® “Lawyer of the Year” for Litigation–InsuranceNamed 2022 Attorney of the Year by Top 100 RegistryMartindale-Hubbell® Peer Review Rating™–AV Preeminent, reflecting an attorney who has reached the height of professional excellence and is recognized for the highest levels of skill and integritySelected for inclusion in The Best Lawyers in America®–Commercial Litigation in 2014 and Commercial Litigation and Litigation–Insurance in 2015–2024Selected as a Member of The Nation’s Top One Percent by the National Association of Distinguished Counsel, whose rosters “Consists of the leading legends of the legal profession”Fellow with the American Bar Foundation, membership in which is limited to one-third of one percent of the lawyers in AmericaFor more than 15 years, Law & Politics and Milwaukee Magazine has selected Greg for inclusion in Wisconsin Super Lawyers, a distinction limited to the top 5% of Wisconsin attorneys.Named one of “Milwaukee’s Leading Lawyers,” in 2015, 2016, and 2017 by M Magazine in Litigation. Only 2–5% of the top ranked attorneys published by Avvo for each category were recognized
- Named 2022 Best Lawyers® “Lawyer of the Year” for Litigation–Insurance
- Named 2022 Attorney of the Year by Top 100 Registry
- Martindale-Hubbell® Peer Review Rating™–AV Preeminent, reflecting an attorney who has reached the height of professional excellence and is recognized for the highest levels of skill and integrity
- Selected for inclusion in The Best Lawyers in America®–Commercial Litigation in 2014 and Commercial Litigation and Litigation–Insurance in 2015–2024
- Selected as a Member of The Nation’s Top One Percent by the National Association of Distinguished Counsel, whose rosters “Consists of the leading legends of the legal profession”
- Fellow with the American Bar Foundation, membership in which is limited to one-third of one percent of the lawyers in America
- For more than 15 years, Law & Politics and Milwaukee Magazine has selected Greg for inclusion in Wisconsin Super Lawyers, a distinction limited to the top 5% of Wisconsin attorneys.
- Named one of “Milwaukee’s Leading Lawyers,” in 2015, 2016, and 2017 by M Magazine in Litigation. Only 2–5% of the top ranked attorneys published by Avvo for each category were recognized
