Photo of William D. Dalsen

Will Dalsen is a senior counsel in the Litigation Department. His practice focuses on complex commercial litigation, with a particular emphasis on private credit, private equity, venture capital and hedge funds. Will is highly regarded for his deep knowledge of the private credit fund industry and ability to resolve disputes for both sponsors and portfolio companies. He provides counseling regarding creditor rights, lender liability, sponsor liability, operating company disputes, control rights and regulatory compliance and investigations.

He advises funds, fund sponsors, investment advisers, and institutional and individual investors. In addition, he has represented public and private corporations in contractual disputes, business tort cases, and government investigations.

Will leads all phases of the litigation process, including pre-suit investigations, negotiating discovery disputes and arguing discovery motions, managing expert discovery, preparing and arguing dispositive motions, and preparing witnesses for trial. He has elicited deposition testimony from numerous witnesses on topics ranging from corporate finances to document preservation.

Prior to joining Proskauer, Will served for two years as a law clerk to Judge Susan Phillips Read of the New York State Court of Appeals, drafting bench memoranda and assisting with opinions in a variety of civil and criminal matters. In law school, Will was Editor in Chief of the Wisconsin Law Review and served as a judicial intern to the Honorable Shirley S. Abrahamson, Chief Justice of the Wisconsin Supreme Court.

This past year has brought lots of change, including an amendment to Rule 30(b)(6) of the Federal Rules of Civil Procedure. Rule 30(b)(6) governs the deposition of an organization (e.g., a corporation or a partnership) and requires, generally, that the notice of such a deposition set out with reasonable particularity the matters of examination.  The amended Rule 30(b)(6)—which  became effective on December 1, 2020—now requires that, “[b]efore or promptly after the notice or subpoena is served, the serving party and the organization must confer in good faith about the matters for examination.” The amendment also requires that a subpoena notify a nonparty organization of its duty to confer with the serving party and to designate each person who will testify.