Apart from the above (H‑II, 3.1, and H‑II, 3.2), amendments occasioned by national rights of earlier date are admissible pursuant to Rule 138 (see also G‑IV, 6; H‑III, 4.4, and H‑III, 4.5).
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/h_ii_3_3.htm
Date retrieved: 17 May 2021