Added matter

Added matter or added subject-matter concerns the possibility to amend a patent (application). According to Art. 123(2) of the European Patent Convention (EPC), a European patent (application) may not be amended in such a way that it contains subject-matter which extends beyond the content of the application as filed. Adding subject-matter which is not disclosed would give an applicant an unwarranted advantage and could be damaging to the legal security of third parties. (G 1/93, OJ 1994, 541) The ‘gold standard’ of the European Patent Office’s Board of Appeal  is that “any amendment can only be made within the limits of what a skilled person would derive directly and unambiguously, using common general knowledge, and seen objectively and relative to the date of filing, from the whole of the documents as filed” (G 3/89, OJ 1993,117; G 11/91, OJ 1993, 125).

Added matter, Amendments, EPC, Extension of subject matter, Germany, Kluwer Patent Cases, Mechanical Engineering, Revocation, Validity

(Hoffmann Eitle)/

The judgement “Schleifprodukt” rendered by the German Federal Court of Justice on 25 November 2014 could be seen as a step towards harmonisation with the EPO because the court carried out the test for the admissibility of claim amendments by assessing whether the feature combination of the amended claim in its entirety represents a technical teaching which is identifiable from the original application as being suitable for achieving the effects of the invention.

Added matter, Amendments, EPC, EPO Decision, Priority right, Procedure

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The recent decision T 1843/09 clarifies that the exception to the prohibition of reformatio in peius set out in G 1/99 in order to overcome an objection under Article 123(2) EPC is not the only exception. According to the Technical Board of Appeal, exceptions to this principle are a matter of equity in order to protect a non-appealing Proprietor against procedural discrimination in circumstances where the prohibition of reformatio in peius would impair the legitimate defence of its patent.

Added matter, Case Law, EPC, Mechanical Engineering

(V.O.)/

The Board observed that it could not be understood that the “technical relevance” criterion, proposed by another board in T 1906/11 for judging extension of subject matter, defines a new standard for judging amendments with respect to Article 123(2) in the case of intermediate generalizations. Instead, the Board had to decide whether the technical information…

Added matter, Case Law, Electrical Engineering, EPC

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An amendment of independent patent claim 1 during prosecution introduced a new feature. According to the Examining Division this led to the combinations of features of dependent claims 2-4 to extend beyond the disclosure of the application as filed (Art. 123(2) EPC). The Board of Appeal held that the focus of the Examining Division was…

Added matter, Amendments, Disclaimer, EPC

(Hoffmann Eitle)/

The main principles applicable for assessing whether a non-disclosed disclaimer meets the requirements of Article 123(2) EPC have been laid out in the decision G 1/03 of the Enlarged Board of Appeal (EBA) of the EPO. In the recent decision G 2/10 dated September 19, 2011 a new test for assessing the allowability of non-disclosed disclaimers, the so called “Remaining Subject-Matter Test”, has been established. In applying this test, disclaimers which in the past would have been considered to be allowable in view of G 1/03 may now be (and actually have been)found to actually be in violation of Article 123(2) EPC.

Added matter, Case Law, Inventive step, Mechanical Engineering, United Kingdom, Validity

(Bristows)/

The Court held that a decision by the EPO relating to the UK designation was not capable of challenge. In any event, the procedure chosen by the claimant to challenge the decision (an application to correct the UKIPO register based on Rule 50 of the Patents Rules 2007) was wrong, because it required the consent…

Added matter, United Kingdom, Validity

(EIP)/

Liversidge v (1) Owen Mumford Limited (2) Abbott Laboratories Limited In April 2011, the claimant commenced patent infringement proceedings in the UK Patents County Court (“PCC”) against the defendants in respect of European Patent No. 2067496 entitled “Medical Injector”. The defendants denied infringement and counterclaimed invalidity. Background The claimant filed a patent application for a…

Added matter, Case Law, Ireland, Validity

(Mccann Fitzgerald)/

The Court cited the parallel proceedings between the parties in the United Kingdom, where the approach of the EPO Board of Appeal in T331/87 Houdaille/Removal of Feature [1991] EPOR 194 was applied, and concluded that the changes in the patent amount to added matter. Click here for the full text of this case. A summary of…