
Sig Sorenson
sas@sorensonlaw.nyc
+1 917 916 5196
Practice Description
Our founder, Sig Sorenson, has spent his career litigating, arbitrating, and winning high-stakes domestic and international commercial disputes, first with the global firm Clifford Chance (legacy Rogers & Wells), where he ultimately headed the firm’s North American Product Liability Group; then as a Litigation Partner for six years with the global firm Baker McKenzie; and since 2013 as Managing Partner for Sorenson Law Offices (legacy Saito Sorenson). Mr. Sorenson began his career clerking for United States District Judge John T. Elfvin (W.D.N.Y.).
In representing some of the world’s premier corporations, Mr. Sorenson has practiced throughout the United States, and in Asia, Europe, Africa, and the Middle East. He has extricated his clients from “judicial hellholes” in Texas and California, has collected evidence and testimony for them in the Sudan, and has advised and assisted the governments of Yemen, Mongolia, and Sri Lanka in drafting national legislation. He has lectured frequently to European and Asian industry groups about reducing the litigation risks of doing business in the United States. From 2006 until 2012, he served (in addition to his law firm duties) as Adjunct Professor of Law at St. John’s University School of Law.
Mr. Sorenson’s practice focuses on complex commercial litigation and arbitration, high-tech product liability/mass tort litigation, contract disputes, defamation and media law, fraud, and appellate advocacy. He is an experienced trial and class action attorney. He excels at clearly and compellingly presenting scientific and technical evidence, and at cross-examining and impeaching expert witnesses.
Besides litigation and arbitration, Mr. Sorenson negotiates and drafts commercial agreements and employment contracts, advises shareholders concerning their rights and potential liabilities, and analyzes his clients’ business practices to identify and reduce litigation and liability risks. In proposed mergers and acquisitions, he assesses the litigation and liability risks of target companies. He also reviews his clients’ legal invoices from other law firms and, where appropriate, negotiates lower bills.
Employment history
Sorenson Law Offices (legacy Saito Sorenson), New York, 2013 to present. Founder and Managing Partner.
Baker McKenzie, New York office, 2007 to 2013. Litigation Partner.
Clifford Chance (legacy Rogers & Wells), New York office, 1995 to 2007. Litigation Associate, then Counsel, then Head of U.S. Product Liability Practice Group.
Law Clerk, United States District Judge John T. Elfvin, W.D.N.Y., 1993 to 1995.
Representative matters
Admissions
New York, Wisconsin, S.D.N.Y., E.D.N.Y, Second Circuit, Ninth Circuit. Admitted pro hac vice for various cases in numerous jurisdictions.
Pro bono
Volunteer attorney since 2007 for the International Senior Lawyers Project. Represented clients of Volunteer Lawyers for the Arts from 1995 to 2006.
Education
University of Wisconsin Law School, J.D., cum laude. Three-time winner of the American Jurisprudence award. International Law Journal member.
St. John’s College, Annapolis, MD, B.A., Classical Liberal Arts (Philosophy, Astronomy, Ancient Greek, Mathematics, Physics, Logic, Literature).

Sigurd Ansgar Sorenson
Founder and Managing Partner
sas@sorensonlaw.nyc
office: +1 212 245 1919
+1 917 916 5196
Practice Description
Our founder, Sig Sorenson, has spent his career litigating, arbitrating, and winning high-stakes domestic and international commercial disputes, first with the global firm Clifford Chance (legacy Rogers & Wells), where he ultimately headed the firm’s North American Product Liability Group; then as a Litigation Partner for six years with the global firm Baker McKenzie; and since 2013 as Managing Partner for Sorenson Law Offices (legacy Saito Sorenson). Mr. Sorenson began his career clerking for United States District Judge John T. Elfvin (W.D.N.Y.).
In representing some of the world’s premier corporations, Mr. Sorenson has practiced throughout the United States, and in Asia, Europe, Africa, and the Middle East. He has extricated his clients from “judicial hellholes” in Texas and California, has collected evidence and testimony for them in the Sudan, and has advised and assisted the governments of Yemen, Mongolia, and Sri Lanka in drafting national legislation. He has lectured frequently to European and Asian industry groups about reducing the litigation risks of doing business in the United States. From 2006 until 2012, he served (in addition to his law firm duties) as Adjunct Professor of Law at St. John’s University School of Law.
Mr. Sorenson’s practice focuses on complex commercial litigation and arbitration, high-tech product liability/mass tort litigation, contract disputes, defamation and media law, fraud, and appellate advocacy. He is an experienced trial and class action attorney. He excels at clearly and compellingly presenting scientific and technical evidence, and at cross-examining and impeaching expert witnesses.
Besides litigation and arbitration, Mr. Sorenson negotiates and drafts commercial agreements and employment contracts, advises shareholders concerning their rights and potential liabilities, and analyzes his clients’ business practices to identify and reduce litigation and liability risks. In proposed mergers and acquisitions, he assesses the litigation and liability risks of target companies. He also reviews his clients’ legal invoices from other law firms and, where appropriate, negotiates lower bills.
Representative matters
Admissions
Admitted to practice in the states of New York and Wisconsin, and in federal courts in New York, California, and Wisconsin. Admitted pro hac vice for various cases in numerous jurisdictions.
Pro bono
Volunteer attorney since 2007 for the International Senior Lawyers Project. Represented clients of Volunteer Lawyers for the Arts from 1995 to 2006.
Education
University of Wisconsin, J.D., cum laude. Three-time winner of the American Jurisprudence award. International Law Journal member.
St. John’s College, Annapolis, MD, B.A., Classical Liberal Arts (Philosophy, Astronomy, Ancient Greek, Mathematics, Physics, Logic, Literature).