GL H II 6.2 Subject-matter taken from the description

Within the framework of Art. 123(2) and Art. 82, Rule 137(5), first sentence, should be construed as permitting any limitation of searched subject-matter which is unitary with the originally claimed subject-matter, irrespective of whether the technical feature(s) used for the limitation has/have been searched.[Rule 137(5); ]
Thus, the addition to a claim of a technical feature which further defines an element that was already a feature of the original main claim or makes a contribution to the effect(s) of the features of the originally claimed invention(s) and which was expressly not searched but was disclosed in the context of the invention in the application as filed (usually in the description) will not result in an amended claim lacking a single general inventive concept with respect to the originally claimed invention(s). Consequently no objection under Rule 137(5), first sentence, should be raised in these circumstances, even though an additional search may be required (see C‑IV, 7.2).
If amended claims are directed to subject-matter which has not been searched because it only appeared in the description (and the search division did not find it appropriate to extend the search to this subject-matter, see B‑III, 3.5) and which does not combine with the originally claimed and searched invention or group of inventions to form a single general inventive concept, such amendments are not admissible.
In other words, in order to assess whether or not amended claims fulfil the requirements of Rule 137(5), first sentence, the examining division needs to establish first whether or not the subject-matter to which they relate has or should have been searched (see B-III, 3.5) and second whether or not an objection of lack of unity would have been raised if the amended claims had been present in the set of claims on file at the time of the search.
AnAs a consequence, an objection under Rule 137(5), first sentence, will normally arise if the applicant attempts to replace a technical feature contained in a claim with a different technical feature taken from the description.
AnSimilarly, an objection under Rule 137(5), first sentence, would also arise if a technical feature taken from the description which has an effect unrelated to the effect(s) of the features of the originally claimed invention(s) were added to a claim. Such a situation could arise when the subject-matter originally claimed has to be amended in view of a novelty or inventive step objection resulting from a broad claim formulation and when the original broad claim is restricted by the addition of a technical feature from the description which had an effect not related to the effects of the features already present in the original set of claims, such that there is lack of unity between the new limited claim and the claims originally present.
If an objection under Rule 137(5), first sentence is raised, the applicant should be informed that he may continue to pursue such subject-matter only in the form of a divisional application under Art. 76.
The situation described above is different from amendments corresponding to an invention originally claimed but not searched under Rule 64, or Rule 164(1) or (2), which are dealt with in H‑II, 7.2.
Applicants should bear in mind that the examining procedure should be brought to a conclusion in as few actions as possible. So the examining division may exercise its right not to admit further amendments under Rule 137(3) (see H‑II, 2.3).[Rule 137(3); ]
For Euro-PCT applications where the EPO acted as ISA or as SISA, the examining division has to issue an invitation under Rule 164(2) for unsearched inventions contained in the application documents which are to serve as the basis for examination upon expiry of the six-month time limit set in the communication under Rule 161 or Rule 162, even if these inventions were imported from the description (see C‑III, 2.3).

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EPC Articles

EPC Implementing Rules

EPO Guidelines - B Search

EPO Guidelines - C Procedureal Aspects of Substantive Examination

EPO Guidelines - F The European Patent Application

EPO Guidelines - H Amendments and Corrections

Offical Journal of the EPO

Case Law Book: IV Divisional Applications