§§ 139-163 - (Teilnichtigkeit, Anfechtung, Vertrag, Bedingung und Zeitbestimmung)

The new 2025 edition of §§139–163 brings the commentary up to date. Practical issues are explained with a focus on solutions, including the lack of form in advance payment agreements, the complete invalidity of purchase contracts, mass transactions, supplementary contract interpretation, and procedural legal questions like the reclassification of impermissible staged lawsuits into permissible claims under §260 of the Code of Civil Procedure.