T 0633/09 11-10-2011

I. Mention of the grant of European patent No. 0 975 235 in respect of European application No. 98 912 118.1, filed as International application No. PCT/US98/06216 in the name of Abbott Laboratories on 30 March 1998, was announced on 24 May 2006 in Bulletin 2006/21.

The patent was granted with 12 claims, independent claims 1 and 7 reading as follows:

"1. A synthetic nutritional composition comprising one or more human milk oligosaccharides, wherein the human milk oligosaccharides in the composition are selected from the group consisting of:

from 1456 to 1750 mg/liter of 3-fucosyllactose;

from 507 to 1100 mg/liter of lacto-N-fucopentaose III;

from 361 to 750 mg/liter of lacto-N-fucopentaose II;

from 393 to 1450 mg/liter of difucosyllactose;

from 2240 to 2400 mg/liter of 2'-fucosyllactose;

from 845 to 1650 mg/liter of lacto-N-fucopentaose I;

from 258 to 450 mg/liter of lacto-N-neotetraose; or

from 120 to 1600 mg/liter of lacto-N-fucopentaose V;

and said composition further comprises edible macronutrients,

wherein said composition is intended for use with normal, healthy infants, children, adults or subject having specialized needs such as those that accompany certain pathological conditions."

"7. A process for manufacturing a synthetic nutritional composition comprising one or more human milk oligosaccharides, wherein the human milk oligosaccharides in the composition are selected from the group consisting of:

from 1456 to 1750 mg/liter of 3-fucosyllactose;

from 507 to 1100 mg/liter of lacto-N-fucopentaose III;

from 361 to 750 mg/liter of lacto-N-fucopentaose II;

from 393 to 1450 mg/liter of difucosyllactose;

from 2240 to 2400 mg/liter of 2'-fucosyllactose;

from 845 to 1650 mg/liter of lacto-N-fucopentaose I;

from 258 to 450 mg/liter of lacto-N-neotetraose; or

from 120 to 1600 mg/liter of lacto-N-fucopentaose V;

and said composition further comprises edible macronutrients,

wherein said composition is intended for use with normal, healthy infants, children, adults or subject having specialized needs such as those that accompany certain pathological conditions, said process comprising the step of preparing said oligosaccharides by chemical synthesis."

Claims 2 to 6 and 8 to 11 were dependent claims.

II. On 23 February 2009 oppositions against the patent were filed by

Friesland Brands B.V. (opponent I) and

N.V. Nutricia (opponent II).

The opponents requested revocation of the patent in its entirety on the grounds according to Article 100(a) EPC (lack of novelty and lack of inventive step), 100(b) and 100(c) EPC.

III. With its decision announced orally on 15 January 2009 and issued in writing on 13 February 2009 the opposition division revoked the patent. The only reason for revocation was that the subject-matter of the independent claims 1 and 7 as granted did not comply with the requirements of Article 123(2) EPC.

The opposition division argued in particular that, owing to the wording "selected from the group consisting of" the oligosaccharides in the composition of claims 1 and 7 as granted were now strictly limited to the presence of at least one of eight specified oligosaccharides, while excluding the oligosaccharide lacto-N-tetraose (LNT) and any other (non-specified) oligosaccharides. In contrast, claim 1 as originally filed required the presence of at least one of nine oligosaccharides including LNT, and left room for further non-specified oligosaccharides. In addition, the amounts of the respective oligosaccharides were restricted by combining the lower levels of original claim 17 with the upper levels of original claim 16. The omission of LNT, the restriction of the amounts of the other specified oligosaccharides in accordance with original claims 16 and 17 and the exclusion of other non-specified oligosaccharides was a multiple selection of features which did not comply with Article 123(2) EPC.

IV. Notice of appeal was filed by the patent proprietor (hereinafter: appellant) on 18 March 2009. The prescribed fee was paid on the same day. The grounds of appeal were received on 19 June 2009.

The appellant contradicted the arguments of the opposition division concerning non-compliance with Article 123(2) EPC and filed three sets of claims as a basis for a main request and first and second auxiliary requests. The claims of the main request were identical with the granted claims.

V. Opponents I and II (hereinafter respondents I and II) responded to the grounds of appeal with their letters dated 6 November 2009 (respondent I) and 18 January 2010 (respondent II) and maintained their objections under Article 123(2) EPC.

VI. With the letter dated 14 July 2011 the appellant filed a further set of claims as basis of a third auxiliary request.

VII. In a communication sent per fax on 9 September 2011 the board noted that the only reason for revocation of the patent was added subject-matter (Article 123(2) EPC). This issue would be dealt with in the oral proceedings scheduled for 11 October 2011. In respect of this issue, the board gave its preliminary view on the interpretation of claims 15 to 20 as originally filed and on the amendment of the wording "comprising" in the original claims to "consisting of" in the claims of all current requests.

VIII. In their letters dated 9 September 2011 and 6 October 2011 the respondents provided further arguments as to non-compliance with Article 123(2) EPC and raised objections under Article 84 and 123(3) EPC against various requests of the appellant. In addition, respondent II pointed out that the description of the opposed patent, in particular the text relating to the single illustrative example, also contravened Article 123(2) EPC.

IX. On 11 October 2011 oral proceedings were held before the board. At the beginning, the appellant re-ordered its requests. The third auxiliary request became the main request and the claims as granted (old main request) and the first and second auxiliary requests became the first to third auxiliary requests. After the discussion of the main request, which was admitted into the proceedings, with regard to Article 123(2) and 84 EPC, the appellant filed a set of claims 1 to 4 as the basis for a new main request replacing the former (re-ordered) main request. Independent claims 1 and 3 of this request read as follows:

"1. A synthetic nutritional composition comprising one or more human milk oligosaccharides, wherein the human milk oligosaccharides in the composition are selected from the group consisting of:

from 1456 to 1750 mg/liter of 3-fucosyllactose;

from 507 to 1100 mg/liter of lacto-N-fucopentaose III;

from 361 to 750 mg/liter of lacto-N-fucopentaose II;

from 393 to 1450 mg/liter of difucosyllactose;

from 2240 to 2400 mg/liter of 2'-fucosyllactose;

from 845 to 1650 mg/liter of lacto-N-fucopentaose I;

from 258 to 450 mg/liter of lacto-N-neotetraose; or

from 120 to 1600 mg/liter of lacto-N-fucopentaose V;

and said composition further comprises edible macronutrients, formulated for feeding to an infant selected from one or more of coconut oil, soy oil, mono- and diglycerides, glucose, food grade lactose, electrodialysed whey, electrodialysed skim milk and milk whey, one or more of vitamins A, C, D, E, and B complex; and one or more of minerals, calcium, magnesium, manganese, sodium, potassium phosphorus, copper, zinc chloride, iodine, selenium and iron,

wherein said composition is intended for use with normal, healthy infants, children, adults or subject having specialized needs such as those that accompany certain pathological conditions."

"3. A process for manufacturing a synthetic nutritional composition comprising one or more human milk oligosaccharides, wherein the human milk oligosaccharides in the composition are selected from the group consisting of:

from 1456 to 1750 mg/liter of 3-fucosyllactose;

from 507 to 1100 mg/liter of lacto-N-fucopentaose III;

from 361 to 750 mg/liter of lacto-N-fucopentaose II;

from 393 to 1450 mg/liter of difucosyllactose;

from 2240 to 2400 mg/liter of 2'-fucosyllactose;

from 845 to 1650 mg/liter of lacto-N-fucopentaose I;

from 258 to 450 mg/liter of lacto-N-neotetraose; or

from 120 to 1600 mg/liter of lacto-N-fucopentaose V;

and said composition further comprises edible macronutrients, formulated for feeding to an infant selected from one or more of coconut oil, soy oil, mono- and diglycerides, glucose, food grade lactose, electrodialysed whey, electrodialysed skim milk and milk whey, one or more of vitamins A, C, D, E, and B complex; and one or more of minerals, calcium, magnesium, manganese, sodium, potassium phosphorus, copper, zinc chloride, iodine, selenium and iron,

wherein said composition is intended for use with normal, healthy infants, children, adults or subject having specialized needs such as those that accompany certain pathological conditions, said process comprising the step of preparing said oligosaccharides by chemical synthesis."

The respondents requested that the new main request be not admitted into the proceedings.

X. The arguments of the respondents, as far as they are related to the subject-matter of the new main request may be summarized as follows:

(a) Article 123(2) EPC

(i) Main request submitted during the oral proceedings

The open wording "comprising" relating to the presence of at least one of nine specified human milk oligosaccharides in the composition claimed in claim 1 as originally filed not only embraced the nine oligosaccharides but also left room for the presence of other non-specified oligo saccharides.

Replacement of the wording "comprising" by "consisting of" and the similar deletion of the ninth oligosaccharide lacto-N-tetraose (LNT) in claim 1 of the main request, with the consequence that no other oligosaccharide, except for the specified eight remaining ones, could be present in the claimed composition did not comply with Article 123(2) EPC.

It emerged in particular from the first paragraph on page 2 of the application as filed, that the deleted oligosaccharide LNT was a biologically beneficial human milk oligosaccharide. This was confirmed by the chromatogram depicted in figure 1 showing that LNT was a major fraction in human milk. There was thus a pointer in the application as filed that LNT was an essential ingredient of the claimed nutritional composition which was formulated for feeding infants in order to replace human milk. Deletion of this essential LNT was therefore a shift of the invention for which no basis existed in the application as filed.

Furthermore, the additional exclusion of the presence of other non-specified oligosaccharides, together with the deletion of LNT, had to be considered a combination of two distinct measures which was not allowable under Article 123(2) EPC.

Furthermore, claim 1 could also not be derived from a combination of the features of independent claim 18 and dependent claims 19 and 20 as originally filed because the composition according to claim 18 neither had to be synthetic nor did it specify the intended use, as required by claim 1.

(ii) Example in the patent specification

The single example in the patent specification mentioned, in the introductory section, a list of only 5 of the nine originally disclosed oligosaccharides. This did not correspond to original example 4 from which this example was derived and which indicated a complete list of all nine oligosaccharides. The amendment in the example of the patent specification was therefore objectionable under Article 123(2) EPC.

(b) Article 84 EPC

The composition of claim 1 included, in addition to the specified oligosaccharides, edible macronutrients which are "formulated for feeding to an infant". This limited property is in contradiction to the extended use of the compo sition which, according to the last phrase in the claim "is intended for use with normal, healthy infants, children, adults or subject having specialized needs...".

The scope of claim 1 was therefore unclear, contrary to Article 84 EPC.

XI. The appellant's counterarguments were as follows:

(a) Article 123(2) EPC

(i) Reformulation of claim 1 into a closed language in respect of the oligosaccharides excluded the presence of further oligosaccharides which were hypothetical and nowhere disclosed in the application as filed. Furthermore, deletion of the optional oligosaccharide LNT from the list was simply a restriction of the list from nine to eight possible oligosaccharides.

In this context it had to be noted that, contrary to the respondents' view, there was no pointer in the application as filed that LNT was an essential component which was indispensable for the claimed composition. Paragraph 2 at page 1 of the description listed LNT as only one of nine possible oligosaccharides which could be present in the synthetic nutritional composition. Moreover, the passage on page 11 of the description explaining the chromatograms depicted in the figures of the application related to human milk and not to the synthetic composition of the present invention.

As to the respondents' objection that claim 1 was not derivable from a combination of claims 18 to 20 as originally filed because the claims were not directed to a synthetic composition it should be noted that the invention as a whole pertained to a synthetic nutritional composition. This became evident from the paragraph relating to the "Technical Field of the Invention" on page 1 of the application as filed, which indicated that "The present invention relates generally to the composition of synthetic nutritional products containing oligosaccharides from human milk".

(ii) Original example 4 from which the single example of the patent was derived, unambiguously disclosed a ready-to-feed infant formulation including only five of the nine possible oligosaccharides listed in the recipe on page 16 under the heading "Nutrients:". Deletion of the oligosaccharides in the introductory section of the example, which were not intended to be used in the recipe was therefore just a harmonisation of both parts of the example.

(b) Article 84 EPC

The inconsistency in claim 1 between the formulation of the edible macronutrients comprised in the claimed nutritional composition and the intended use of the composition was not objectionable under Article 84 because these features resulted from a combination of claims 1 and 2 as granted.

XII. The appellant requested that the decision under appeal be set aside and that the case be remitted to the opposition division for further prosecution on the basis of claims 1-4, filed as main request during the oral proceedings, alternatively, on the basis of the claims as granted (1st auxiliary request) or on the basis of the sets of claims filed with the letter dated 19 June 2009 as "First" and "Second" auxiliary requests.

XIII. The respondents requested that the appeal be dismissed, alternatively, in the event of the decision being set aside, that the case be remitted to the opposition division for further prosecution.