AMI Industries, Inc v Martin-Baker Aircraft Company Ltd [2026] EWHC 1027 (Pat) (01 May 2026)
- Citation
- [2026] EWHC 1027 (Pat)
- Status
- Judgment
- Jurisdiction
- England and Wales
- Posture
- Patent Infringement / High Court Judgment
More details
- Posture
- Patent Infringement / High Court Judgment
On this page
Professional case brief
Research organized from the available case record
01
Holding and result
The court found that the defendant's products fell within the scope of the claimant's patent claims and that the patent was valid over the cited prior art.
Court disposition
Claim allowed
Orders
- Declaration of infringement
- Injunction against further infringement
- Order for inquiry as to damages or account of profits
02
Material facts
Parties
AMI Industries, Inc
ClaimantMartin-Baker Aircraft Company Ltd
Defendant03
Procedural history
Posture
Patent Infringement / High Court Judgment
04
Questions and positions
Legal issues
- 01
Whether Martin-Baker Aircraft Company Ltd infringed AMI Industries, Inc's patent
- 02
Whether the patent held by AMI Industries, Inc is valid
Party arguments
- Applicant
- AMI Industries, Inc argued that Martin-Baker Aircraft Company Ltd manufactured and sold products that fell within the scope of their valid patent claims.
- Respondent
- Martin-Baker Aircraft Company Ltd contended that their products did not infringe the patent and challenged the validity of the patent on grounds of prior art and obviousness.
05
Court’s reasoning
Legal principles
- 01
Patents Act 1977
A patent is infringed if the alleged product falls within the scope of the claims as properly construed.
- 02
Patents Act 1977
A patent may be revoked if it is shown to lack novelty or involve an inventive step.
06
Ratio, limits and disposition
Ratio decidendi
The court found that the defendant's products fell within the scope of the claimant's patent claims and that the patent was valid over the cited prior art.
Court disposition
Claim allowed
- Declaration of infringement
- Injunction against further infringement
- Order for inquiry as to damages or account of profits
Source and reliance status
Official court record
This page organises the available record for research. Confirm quotations, current status, and subsequent treatment against the official source before relying on the case.
Judgment reading view
Judgment text
The complete available source text.
Court record
Judgment
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