What are some cases where the Court of Appeal has found that a decision made by a party not to appeal against a decision not to grant leave to appeal is invalid?

Does the Court of Appeal have any authority to grant leave to appeal to appeal? (Ontario, Canada)

What is the test for appeal judges to grant leave to allow a party to argue an entirely new issue on appeal? (Ontario, Canada)

What is the test for appeal against a judgment by the Court of Appeal in the Superior Court of Justice granting custody to a mother and her two-year-old daughter? (Ontario, Canada)

How has the court considered a motion for leave to appeal a decision of the case conference judge staying a motion to change until outstanding costs have been paid? (Ontario, Canada)

What are the implications of the Court of Appeal's decision to grant relief to a plaintiff in a personal injury case? (Ontario, Canada)

In what circumstances will a court grant leave and certification under the CPA and also grant leave to proceed under Part XXIII of the Securities Act? (Ontario, Canada)

What is the relevant test on a motion to appeal against a decision by the Court of Appeal against a condominium corporation? (Ontario, Canada)

Is a judge who exercises his or her discretion on a motion for leave to appeal making a "conflicting decision" when the circumstances of the case are different than in other jurisprudence? (Ontario, Canada)

What are the implications of the Court of Appeal’s decision to award elevated costs in a personal injury case? (Ontario, Canada)

What is the effect of the Court of Appeal's decision in 2004 that found that a portfolio manager was able to vary the value of his portfolio against the market price cap? (Ontario, Canada)