- Tiemstra, the first class action case in British Columbia to be decided by the Court of Appeal.
- Meares Island, in which it was established that injunctive relief could be based on aboriginal rights.
- R. v Kokesch, in which the Supreme Court of Canada defined the scope of the constitutional right against unreasonable search and seizure.
- R. v. G(RM), in which the Supreme Court of Canada revised the model instructions for an exhortation to a jury where the jury is unable to reach a unanimous verdict.
- R. v. NTC Smokehouse Ltd., in which the Supreme Court of Canada considered the aboriginal right to fish and whether it extended to commercial sale.
- R. v. Grant, in which the Supreme Court of Canada revisited and comprehensively considered the powers of search and seizure pursuant to the common law and the Criminal Code.
- Most recently, David was lead counsel for the Tsilhqot’in in the case of Tsilhqot’in Nation v. British Columbia decided by the Supreme Court of Canada on June 26, 2014. The Tsilhqot’in were entirely successful after 25 years in the courts. The decision from the Supreme Court of Canada declared aboriginal title, a first in Canadian history, and has been widely proclaimed as one of the most important cases in the field of aboriginal law.
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