Dale Kunath of High River had argued that he wasn't given enough credit for his guilty plea when he was sentenced in February to 10 years in prison.
But the three-member Appeal Court panel says the trial judge's decision was thorough and comprehensive with no reviewable errors.
During his sentencing, Justice Neil Wittman called the acts on the baby boy despicable, depraved and disgusting.
Court heard that Kunath burned the baby's feet with a lighter and injured his genitals so severely that the child might never fully recover.
Kunath was apparently upset that his girlfriend, the baby’s mother, was speaking with the biological father.
Kunath River pleaded guilty last December. The judge gave him 21 months credit for time already served.
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