FAIRFAX, VIRGINIA.  July 19, 2019McCandlish Lillard is pleased to announce that the firm has rehired attorney Daniel P. Lyon as Of Counsel.  Daniel is an accomplished attorney and business executive with more than 30 years of progressive experience with repeated success across a broad range of industries and business segments.  He provides legal counsel for clients on a variety of business issues, including business sales, mergers and acquisitions, government contracting and related statutory and regulatory compliance, business organizations (including SDB joint ventures), teaming agreements, stockholder, partner and operating agreements, software and data licensing and development, SaaS, data mining and distribution, leasing, loan documents, executive compensation and employment/labor law.  He will provide legal services as a member of the firm’s Business and Intellectual Property groups.

Daniel P. Lyon

Daniel began his legal career in Fairfax, Virginia, as an associate in the law firm of Miles & Stockbridge, before becoming an associate and then partner in the law firm of McCandlish Lillard, where he served as a member of its Board of Directors (2000-2008), chairman of the Marketing Committee, leader of the firm’s Strategic Planning (2000-2007) and Treasurer and member of its Executive Committee (2006-2008). Daniel provided services for the Firm’s Business, Litigation and Information Technology practice group until he departed in 2008 to establish and operate a successful government consulting company, which he co-founded. He also served as the company’s General Counsel, Chief Financial Officer and a member of its Board of Directors. Daniel has extensive knowledge related to the legal and financial needs of government contractors.

“We are extremely pleased to welcome Daniel back to our firm,” said R. Peyton Mahaffey, President and Managing Partner of the firm. “He brings a wealth of knowledge and experience not only in business and information technology, but he has a proven track record advising entrepreneurs and business owners, and his substantial trial experience makes him a valuable advisor.”

On a personal level, Daniel is an avid golfer and plays competitively for Belmont Country Club in Ashburn, Virginia.



McCandlish Lillard is a mid-size law firm with offices in Fairfax and Leesburg.  The law firm has been meeting the legal needs of businesses and individuals in Northern Virginia and throughout the Commonwealth for more than a century.  For more information regarding McCandlish Lillard, call the firm at 703-273-2288 or visit our website at