In the area of biotechnological inventions, the following list of exceptions to patentability under Art. 53(a) and Art. 53(b) is laid down in Rule 28. Under Art. 53(a) the list is illustrative and non-exhaustive and is to be seen as giving concrete form to the concept of "ordre public" and "morality" in this technical field. A possible immoral use is only to be taken into account if it is specifically considered or at least suggested in the application and can thus be found to constitute an avowed use (G-II, 4.1, and T 866/01).
According to Rule 28(2), plants and animals exclusively obtained by means of an essentially biological process are excluded from patentability. This exclusion regarding plants and animals exclusively obtained by means of an essentially biological process applies to patent applications with a filing date and/or a priority date after 1 July 2017. It does not apply to patents granted before that date or to pending patent applications with a filing date and/or a priority date before 1 July 2017 (see G 3/19, OJ EPO 2020, A119).
For the purpose of this exception, a process for the cloning of human beings may be defined as any process, including techniques of embryo splitting, designed to create a human being with the same nuclear genetic information as another living or deceased human being (EU Dir. 98/44/EC, rec. 41).
A claim directed to a product which at the filing date of the application could be exclusively obtained by a method which necessarily involved the destruction of human embryos from which the said product is derived is excluded from patentability under Rule 28(1)(c), even if said method is not part of the claim (see G 2/06). The point in time at which such destruction takes place is irrelevant (T 2221/10).
An application pertaining to human pluripotent stem cells, including human embryonic stem cells, uses thereof or products derived therefrom cannot be regarded as excluded from patentability under Art. 53(a) and Rule 28(1)(c) (T 0385/14) if (i) the application has an effective date (i.e. a valid priority date or, if no priority is claimed or the priority is not valid, a filing date) on or after 5 June 2003, and (ii) its technical teaching can be put into practice using human embryonic stem cells derived from parthenogenetically activated human oocytes.
Foetal and post-natal human cells are in principle not excluded from patentability.
Culture media, supports and apparatuses "suitable for" use with human embryonic cells, or even "specifically designed" for this purpose, are not per se excluded from patentability. Their production normally does not require the use of human embryos as base material.
The exclusion of the use of human embryos for industrial or commercial purposes does not affect inventions for therapeutic or diagnostic purposes which are applied to the human embryo and are useful to it (EU Dir. 98/44/EC, rec. 42).
The substantial medical benefit referred to above includes any benefit in terms of research, prevention, diagnosis or therapy (EU Dir. 98/44/EC, rec. 45).
In addition, the human body, at the various stages of its formation and development, and the simple discovery of one of its elements, including the sequence or partial sequence of a gene, cannot constitute patentable inventions (see, however, G‑II, 5.2). Such stages in the formation or development of the human body include germ cells (EU Dir. 98/44/EC, rec. 16).
A parthenote is neither a human body at a stage of its formation and development nor one of its elements (i.e. human germ cell); thus a parthenote or cells derived therefrom are in principle not excluded from patentability under Rule 29(1).
Also excluded from patentability under Art. 53(a) are processes to produce chimeras from germ cells or totipotent cells of humans and animals (EU Dir. 98/44/EC, rec. 38).
Judgments of the Court of Justice of the European Union on the interpretation of EU Directive 98/44/EC are not binding on the EPO. Still, they may be considered as being persuasive (T 2221/10 and T 1441/13).