Ava Marion Hillier

E-mail MeAva Marion Hillier

Partner since 1987
Brampton, Ontario, Canada

Direct Email: mailto:[email protected]

Ava Marion Hillier was born in Montreal in 1954 and graduated  with a Bachelor of Arts  ( BA) from Queen’s University in 1975. She graduated from Osgoode Hall Law School in 1978 and was called to the Ontario Bar in Toronto in 1980. She joined her mother Suzanne Hillier in legal practice in Brampton Ontario in 1980 and carried on a general litigation practice in real estate and commercial litigation and criminal law until 1987, at which time she became a partner at Hiller and Hillier, thereafter specializing in personal injury litigation, including professional negligence claims. She co – founded the Ontario Trial Lawyer’s Association ( OTLA) in 1991.  She has presented numerous lectures , presentations and written numerous articles on personal injury litigation for OTLA and for its magazine,  The Litigator, since 1991. She has lectured  and presented for or on behalf of, The Canadian Institute, The Ontario Bar Association, Queen’s University Law School, The Canadian Bar Association, Insight, The American Association of Justice (AAJ), The American Trial Lawyers Association ( ATLA), The Canadian Medical – Legal Society,  MAAD ( Mothers Against Drunk Driving),  the Osgoode Hall Law Association and The Advocates Society.   She  served as a Director and Vice -President of  The Ontario Trial Association for over 7 years. She received the Distinguished Service Award from the Ontario Trial Lawyers Association in October of 2004.  In 1998 and 1995  OTLA awarded her The Most Popular Professor in the Trial Advocacy Course at Queen’s University.  She was invited to act as a Director of the Advocate’s Society from 2007 to 2010, and she has presented on behalf of the Advocate’s Society in Canada, Mexico and in the Cayman Islands.

Ava has appeared in trial courts at every level in Ontario representing injured Plaintiffs, and at the Court of Appeal. Her legal practice is restricted to personal injury litigation, claims arising from denied disability and other insurance applications including SABS claims as well as professional negligence claims. She continues to present on behalf of OTLA and has chaired numerous conventions since its inception in 1991.

She has no plans to retire.


Areas of Practice

  • Personal Injury Litigation

Bar Admissions

  • Ontario, 1980


  • Osgoode Hall Law School, Toronto, Ontario, Canada - 1978
  • Queen’s University
    • B.A., Bachelor of Arts - 1975


  • Lecturer and Presenter, Canadian Institute
  • Lecturer and Presenter, Ontario Bar Association
  • Lecturer and Presenter, Queen’s University Law School
  • Lecturer and Presenter, Canadian Bar Association
  • Lecturer and Presenter, Insight
  • Lecturer and Presenter, American Association of Justice
  • Lecturer and Presenter, American Trial Lawyers Association
  • Lecturer and Presenter, Canadian Medical – Legal Society
  • Lecturer and Presenter, MAAD
  • Lecturer and Presenter, Osgoode Hall Law Association
  • Lecturer and Presenter, Advocates Society
  • Advocate’s Society, Canada, Presenter
  • Advocate’s Society, Mexico, Presenter
  • Advocate’s Society, Cayman Islands, Presenter
  • Presenter, OTLA

Honors and Awards

  • Distinguished Service Award, Ontario Trial Lawyers Association, 2004
  • Awardee, Most Popular Professor, OTLA, 1995 and 1998

Professional Associations and Memberships

  • Ontario Trial Lawyer’s Association, Co-founder, 1991
  • Ontario Trial Association, Director and Vice-President