6.3 Objection of lack of support 

As a general rule, a claim is regarded as supported by the description unless there are well-founded reasons for believing that the skilled person would be unable, on the basis of the information given in the application as filed, to extend the particular teaching of the description to the whole of the field claimed by using routine methods of experimentation or analysis. Support must, however, be of a technical character; vague statements or assertions having no technical content provide no basis.

The division raises an objection of lack of support only if it has well-founded reasons. Once the division has set out a reasoned case that, for example, a broad claim is not supported over the whole of its breadth, the onus of demonstrating that the claim is fully supported lies with the applicant (see F‑IV, 4). Where an objection is raised, the reasons are, where possible, to be supported specifically by a published document.

A claim in generic form, i.e. relating to a whole class, e.g. of materials or machines, may be acceptable even if of broad scope, if there is fair support in the description and there is no reason to suppose that the invention cannot be worked through the whole of the field claimed. Where the information given appears insufficient to enable a person skilled in the art to extend the teaching of the description to parts of the field claimed but not explicitly described by using routine methods of experimentation or analysis, the division raises a reasoned objection, and invites the applicant to establish, by suitable response, that the invention can in fact be readily applied on the basis of the information given over the whole field claimed or, failing this, to restrict the claim accordingly.

The question of support is illustrated by the following examples:

(i)a claim relates to a process for treating all kinds of "plant seedlings" by subjecting them to a controlled cold shock so as to produce specified results, whereas the description discloses the process applied to one kind of plant only. Since it is well-known that plants vary widely in their properties, there are well-founded reasons for believing that the process is not applicable to all plant seedlings. Unless the applicants can provide convincing evidence that the process is nevertheless generally applicable, they must restrict their claim to the particular kind of plant referred to in the description. A mere assertion that the process is applicable to all plant seedlings is not sufficient; 

(ii)a claim relates to a specified method of treating "synthetic resin mouldings" to obtain certain changes in physical characteristics. All the examples described relate to thermoplastic resins and the method is such as to appear inappropriate to thermosetting resins. Unless the applicants can provide evidence that the method is nevertheless applicable to thermosetting resins, they must restrict their claim to thermoplastic resins; 

(iii)a claim relates to improved fuel oil compositions which have a given desired property. The description provides support for one way of obtaining fuel oils having this property, which is by the presence of defined amounts of a certain additive. No other ways of obtaining fuel oils having the desired property are disclosed. The claim makes no mention of the additive. The claim is not supported over the whole of its breadth and objection arises. 

Where it is found that the claims lack support in the description under Art. 84, this may lead to the issuing of a partial European or supplementary European search report under Rule 63 (see B‑VIII, 3.1 and B-VIII, 3.2). In such cases, in the absence of appropriate amendment and/or convincing arguments provided by the applicant in his response to the invitation under Rule 63(1) (see B‑VIII, 3.2) or to the search opinion under Rule 70a (see B‑XI, 8), an objection under Rule 63(3) will also arise (see H‑II, 5).