Examples illustrating essential features can be found in the Annex to F-IV.
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/f_iv_4_5_5.htm
Date retrieved: 17 May 2021
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/f_iv_4_5_5.htm
Date retrieved: 17 May 2021