The commercial biodegradable copolymer BAK 1095 has been studied by means of spectroscopy, X-ray diffraction and calorimetry. Degradability has been evaluated in different media (hydrolytic at distinct temperatures and pHs, and enzymatic) by evaluating the changes in intrinsic viscosity, in the NMR spectra, in mechanical properties and in the surface texture of samples. In addition, a new poly(ester amide) with a regular distribution of the monomers implied in BAK 1095 has also been synthesized and its characteristics compared with the reference polymer.