Chemical medicine patent

Whether your homemade medicine is legal or not has nothing to do with whether your patent is approved. The point is what your homemade medicine is used for. If it is for research (non-human experimental research only) and personal use, there is no problem. However, if the manufactured drugs are sold to the outside world, it will violate the law and be punished for manufacturing and using counterfeit drugs, and if serious consequences are caused, criminal responsibility will be investigated.