The claims, as well as the description, may contain chemical or mathematical formulae but not drawings. The claims may contain tables but "only if their subject-matter makes the use of tables desirable". In view of the use of the word "desirable" in this rule, the division does not object to the use of tables in claims where this form is convenient.[Rule 49(9); ]
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/f_iv_2_4.htm
Date retrieved: 17 May 2021