Mexichem UK Ltd v Honeywell International Inc

Mexichem UK Ltd v Honeywell International Inc

The Court of Appeal held that the judge was correct to refuse to strike out or grant summary judgment against the claim for Arrow declarations. The declarations sought were sufficiently clear, potentially useful, and justified by the breadth of the patents and Honeywell's litigation strategy. There was a real prospect that the declarations would serve a useful purpose at trial, and the matter should proceed to trial for full consideration.

Parties
Claimant/respondent: Mexichem UK Limited; Defendant/appellant: Honeywell International Inc.
Jurisdiction
England and Wales
Judgment Date
01 April 2020
Procedural Posture
Civil Appeal / Appeal From High Court Decision on Application to Strike Out Claim for Declaratory Relief
Outcome
Appeal dismissed
Legal Topics
Patent Revocation, Declaratory Relief, Arrow Declarations, Obviousness, Summary Judgment, Strike Out Applications
Intellectual Property Law Patent Law Patent Revocation Declaratory Relief Arrow Declarations Obviousness Summary Judgment Strike Out Applications

Case Brief

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Parties

Mexichem UK Limited

Claimant/respondent

Honeywell International Inc.

Defendant/appellant

Procedural Posture

Civil Appeal / Appeal From High Court Decision on Application to Strike Out Claim for Declaratory Relief

Legal Issues

  1. 1 Whether the High Court was correct to refuse to strike out a claim for Arrow declarations in a patent revocation action
  2. 2 Whether declaratory relief in broad terms (not tied to a specific product or process) is sufficiently clear and useful to proceed to trial

Ratio Decidendi

The Court of Appeal held that the judge was correct to refuse to strike out or grant summary judgment against the claim for Arrow declarations. The declarations sought were sufficiently clear, potentially useful, and justified by the breadth of the patents and Honeywell's litigation strategy. There was a real prospect that the declarations would serve a useful purpose at trial, and the matter should proceed to trial for full consideration.

Court Disposition

Appeal dismissed

Orders

  • Refusal to strike out claim for Arrow declarations is upheld
  • Refusal to grant summary judgment against Mexichem on the declaratory relief is upheld