Factual and Procedural Background
This judgment concerns an appeal by Appellant against part of the judgment of Judge [Last Name] whereby it was held that Appellee's aircraft seating system does not infringe its European Patent ("the Patent"). Appellee cross-appealed contingently for revocation of the Patent, arguing invalidity only if the Patent's scope covers its system. The trial judge held that if the Patent covered Appellee’s system, it would be invalid for added matter but rejected all other attacks on validity. The appeal narrows the issues to six key questions regarding claim construction, added matter, novelty, and obviousness. The appeal focuses on specific features of claim 1 of the Patent and its relationship to prior art, including British Airways' patent application and Airbus prior art.
Legal Issues Presented
- Is the scope of claim 1 of the Patent limited to systems employing "flip-over" seats?
- If not limited, is the Patent invalid for added matter beyond the original application ("the Parent")?
- Does claim 1 include subject matter disclosed in the British Airways patent application, rendering it invalid for lack of novelty?
- Does claim 1 cover systems using rotatable seat/beds, and if so, is it invalid for lack of novelty over the Airbus patent application?
- If claim 1 is not novel, is it nonetheless obvious over Airbus, the British Airways application, or common general knowledge?
- If claim 1 is obvious, is claim 9 also obvious?
Arguments of the Parties
Appellant's Arguments
- The claim is not limited to flip-over seats; the space-packing concept applies regardless of the seat type.
- The Parent application discloses multiple inventions, including space packing and flip-over seats as distinct concepts, so no added matter arises from the broader claim.
- The British Airways application does not anticipate claim 1 because the claim requires the flat bed to extend into a specific "lost" space defined by the herringbone arrangement, which BA does not do.
- The claim does not cover rotatable seat/beds; the language requires a fixed seat axis and acute angle arrangement incompatible with rotation.
- The Patent is not obvious over prior art, including Airbus and BA First, as the inventive concept involves the non-obvious use of lost cabin space for bed extension.
Appellee's Arguments
- The claim is limited to flip-over seats, as the only embodiment disclosed involves such seats and the invention centers on this feature.
- If the claim is broad enough to cover non-flip-over seats, it adds matter not disclosed in the Parent and is invalid.
- The British Airways application anticipates the claim because the seat moves rearward into space behind it, satisfying the claim's space requirement.
- The claim covers rotatable seat/beds, leading to anticipation by Airbus.
- The Patent is obvious over prior art and common general knowledge, including BA First and Airbus.
Table of Precedents Cited
| Precedent |
Rule or Principle Cited For |
Application by the Court |
| Kirin-Amgen v Hoechst Marion Roussel [2005] RPC 9 |
Principles of purposive claim construction under the EPC |
Guided the court’s approach to claim construction, emphasizing the skilled reader’s understanding and the importance of purpose and context. |
| Mayne Pharma v Pharmacia Italia [2005] EWCA Civ 137 |
Refinement of claim construction principles |
Supported the court’s interpretation of claims in context and purposively. |
| Halliburton v Smith International [2005] EWHC 1623 (Pat) |
Claim construction principles following House of Lords approval |
Reinforced the purposive approach to claim construction adopted by the court. |
| Bonzel v Intervention [1991] RPC 553 |
Prohibition of added matter under Art. 123(2) EPC |
Used to frame the strict comparison between the Parent and the Patent for added matter analysis. |
| European Central Bank v Document Systems [2008] EWCA Civ 192 |
Added matter principles and strict disclosure test |
Reinforced the requirement that added matter must be clearly and unambiguously disclosed. |
| Pozzoli v BDMO SA [2007] FSR 37 |
Adapted Windsurfing test for obviousness |
Provided the framework for the court’s obviousness analysis, focusing on inventive concept and differences from prior art. |
| Telsonic AG's Patent [2004] R.P.C. 38 |
Use of reference numerals in claim construction |
Considered but court held numerals should not limit claim scope. |
| Siemens/Electrode slide (T06/81) |
Interpretation of two-part claims and pre-characterising clauses |
Supported the view that pre-characterising portions are generally expected to describe prior art but not as binding novelty statements. |
| Boehringer/Diagnostic Agent (T99/85) |
Flexibility in claim wording regarding novelty in preamble |
Confirmed that novelty-conferring features in preamble do not require mandatory amendment. |
Court's Reasoning and Analysis
The court began by applying established principles of purposive claim construction, emphasizing the skilled reader's understanding in context and the inventor’s purpose. It held that the skilled reader would know relevant patent drafting conventions, including that reference numerals do not limit claims and that pre-characterising clauses generally describe prior art.
On the first issue, the court rejected the trial judge’s finding that claim 1 is limited to flip-over seats. It reasoned that the space-packing concept underlying the claim is independent of the flip-over feature, which was only one embodiment. The claim’s language and the Parent’s disclosure supported a broader interpretation. The court emphasized that the skilled reader would expect the pre-characterising portion to describe prior art (such as the British Airways application) which did not involve flip-over seats.
Regarding added matter, the court carefully compared the Parent application and the Patent. It found that the Parent disclosed multiple distinct inventions, including flip-over seats and space-packing systems, and that claim 1 of the Patent corresponded closely to claim 44 of the Parent, which did not require flip-over seats. Therefore, the court concluded no added matter was introduced by the broader claim.
On novelty, the court interpreted the "space" into which the flat bed extends as the "lost space" created by the herringbone arrangement, not merely any space behind the seat as in the British Airways application. This purposive construction preserved novelty over the BA application, which did not extend the bed into that specific space.
Concerning rotatable seat/beds, the court held the claim requires a fixed longitudinal seat axis and an acute angle arrangement, incompatible with rotation. Thus, the claim does not cover rotatable seats, avoiding anticipation by Airbus. The court noted that a minor amendment could be made if necessary but found no added matter in doing so.
On obviousness, the court applied the Pozzoli test and found that the inventive concept—the use of lost space behind seats in a herringbone layout to extend flat beds—was not obvious over common general knowledge or prior art including BA First and Airbus. The court highlighted the long delay before the invention emerged despite prior art developments, and the lack of evidence that skilled persons would have arrived at the invention without inventive step.
Holding and Implications
The court held that the Patent is valid and infringed by the Appellee’s system.
The court’s decision confirms that claim 1 is not limited to flip-over seats, does not add matter beyond the Parent application, is novel over the British Airways application and Airbus patent, and is not obvious over prior art or common general knowledge. The ruling directly affects the parties by upholding the Patent’s validity and infringement finding, but it does not establish new legal precedent beyond affirming established principles of claim construction, added matter, novelty, and obviousness in the context of aircraft seating patents.