The PCT has no provision equivalent to Rule 43(2) EPC. However, plural independent claims in one category which comply with the requirement of unity of invention (see GL/PCT‑EPO F‑V, 2) may be objected to under Art. 6 if they result in a lack of clarity and conciseness (see also GL/PCT‑EPO B‑VIII, 4). [GL/ISPE 5.13; 5.14; ]
When assessing whether to raise an objection of lack of clarity or conciseness for such claims, the examiner will take examples (i) to (iv) in GL/EPO F‑IV, 3.2, into account.
Source: http://www.epo.org/law-practice/legal-texts/html/guidelinespct/e/f_iv_3_2.htm
Date retrieved: 17 May 2021