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She became an entrepreneur over ten years ago when she formed a law firm focused on advising entrepreneurs and knowledge-based businesses during both good and challenging times, starting from launch, to financing, growth, pivot/change, and ultimately exit.

Naomi Morisawa De Koven is the managing lawyer of MDK. Naomi is an active charter member of TiE Ottawa, a past recipient of the Ottawa Business Journal’s Forty under 40, and a volunteer director of several not-for-profit organizations. Prior to moving to Ottawa, she was a Toronto-based partner at a national law firm.

Naomi earned a B.A. from McGill University, an LL.B. at the University of Toronto, and was called to the Ontario Bar in 1995.When she's out of the office, Naomi can be spotted out on the water in her kayak, practicing mindfulness, watching the latest sci-fi movie with her family, and searching for unique images to share on Instagram.

Naomi Morisawa De Koven

Managing Lawyer


Simon Sigler is a lawyer at MDK Business Law. His practice is focused in commercial litigation and real estate litigation.

Simon joined the legal field as a student in 2016 and went on to article with an Ottawa based firm in 2017. During his time at the firm, he was involved in initial public offerings, private lender matters, private placements, and commercial litigation matters. Simon has appeared before the Ontario Superior Court of Justice and the Federal Court on various commercial litigation matters.

In his capacity as an OBA Civil Litigation Section Executive Member, Simon has served on a number of legislative working groups consulting the Attorney General of Ontario and the Ministry of Government and Consumer Services.

Prior to working in the legal world, Simon worked in advertising for a boutique agency in Toronto and as part of a legal team reviewing data-protection policies at a multi-national agency in London, U.K. He also spent time at a management consulting company in Seoul, Republic of Korea.

Simon's legal expertise includes leasing, civil litigation, commercial litigation, employment litigation  

Ontario Bar Association Civil Litigation Section Executive - Regional Representative

Executive Member, The Ottawa Mission Foundation – Young Professionals Network

Simon Sigler

Litigation Lawyer


Our Team


Kimberley Chew Leung is a business lawyer at MDK Business Law. She practices in corporate, commercial, privacy and data security law.

Kimberley worked for an Ottawa boutique business law firm in 2018 after articling at a general litigation firm in downtown Toronto where she gained experience in commercial, bankruptcy, and other forms of litigation. She has also done pro bono and volunteer work for the Canadian Cancer Society, the United Nations, Ottawa Chinese Community Service Centre, and more recently, has been volunteering with the Round Table Initiative.

Before law school, Kimberley completed a degree in international business and studied in Shanghai, China. Later, she came back to Ottawa to complete her law school degree at the University of Ottawa and was called to the Ontario bar in 2018. Kimberley took specialized classes in privacy, commercial and comparative contract law and has since gained experience advising on global privacy law trends.

Outside of her legal world, Kimberley enjoys playing badminton and has achieved her provincial level coaching certificate. When not on the court, she likes to try new restaurants, sing out of tune karaoke, and watch badminton, golf, and tennis.

Beverley Kinman

Office Manager


Kimberley Chew Leung

Business Lawyer


Drew Kelsall is a business lawyer at MDK Business Law.

Originally from Toronto, Drew obtained his Bachelor of Arts at McGill University in History and International Relations in 2011. He then lived in Australia while attending first year of law school at Bond University, and completed his Juris Doctor at Queen’s University, graduating in 2015.

While at Queen’s, Drew completed the International Business Law Program at the Bader International Studies Centre at Herstmonceaux Castle in England.

After law school, Drew articled in Toronto with a large national firm, following which he moved to Ottawa and began practicing Matrimonial & Family Law, which was his main area of practice prior to joining MDK Business Law.

Since departing his practice as a family lawyer, Drew has been assisting/advising clients on:

  1. General corporate/commercial matters such as incorporation and shareholder's agreements;
  2. Assisting companies, both start-ups and established entities, in ensuring they are compliant with Ontario and Canadian Laws; and
  3. Advising and assisting corporations through large financings and other securities transactions.

He is also a member of the Law Society of Ontario.

Outside of the office, Drew enjoys skiing during the winter months, travelling, and relaxing at his family’s cottage in Muskoka during the summer. He is an accomplished tenor saxophonist and has an interest in science fiction and video games.

Drew Kelsall

Business Lawyer


Beverley's past volunteer work includes of caring for the elderly and participating in the Arthritis Society fundraising campaign. She also currently volunteers with the Royal Canadian Army Cadet Corps.

Although born and raised in the UK, she is well-travelled, speaks fluent Spanish and is studying Russian. Beverley is a passionate animal advocate; she enjoys spending time with the office dog.