If he's having an injection every two week then yes, it's a dated and lousy protocol. However, encouraging legal action is irresponsible and a recipe for misery for everyone involved except the lawyers. You also don't have a chance in hell. The prescribing information for Depo-Testosterone, the granddaddy of all testosterone cypionate products, says unequivocally that the product "should be administered every two weeks."  I think education is the better strategy: you present the doctor with as many studies as you can find that demonstrate that more frequent injections are safe and effective. If this doesn't work then you find a doctor who's more progressive.