LONDON, England (CNN) -- The father of a baby born with a severe birth defect has agreed to let the child die, ending a court battle against the baby's mother, a lawyer for the hospital taking care of the baby told CNN Tuesday.

The baby's father had been fighting the mother and the hospital in London's High Court.

The child -- identified only as Baby RB -- is about a year old and suffers from congenital myasthenic syndrome, a rare genetic condition which means he cannot breathe on his own.