MMI Research Ltd v Cellxion Ltd & Ors

MMI Research Ltd v Cellxion Ltd & Ors

Privilege in the English brief was waived by accidental disclosure because the mistake was not obvious to the receiving solicitors; waiver does not extend to privileged annexes or related documents unless positive reliance is placed on them. Specific disclosure of non-privileged annexes (K9, K10) ordered; other requests denied for lack of evidence or excessive generality.

Parties
Claimant: MMI Research Ltd; Defendants: Cellxion Ltd & Ors
Jurisdiction
England and Wales
Judgment Date
24 September 2007
Procedural Posture
Patent Infringement and Validity Proceedings / Interlocutory Application Regarding Waiver of Privilege and Specific Disclosure
Outcome
Application partially allowed and partially denied
Legal Topics
Waiver of Privilege, Accidental Disclosure, Patent Infringement, Specific Disclosure, Discovery Obligations
Civil Procedure Intellectual Property Waiver of Privilege Accidental Disclosure Patent Infringement Specific Disclosure Discovery Obligations

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Parties

MMI Research Ltd

Claimant

Cellxion Ltd & Ors

Defendants

Procedural Posture

Patent Infringement and Validity Proceedings / Interlocutory Application Regarding Waiver of Privilege and Specific Disclosure

Legal Issues

  1. 1 Whether privilege in a disclosed document was waived by accidental disclosure
  2. 2 Extent of waiver of privilege to annexes and related documents
  3. 3 Entitlement to specific disclosure of sales, marketing, and technical documents

Ratio Decidendi

Privilege in the English brief was waived by accidental disclosure because the mistake was not obvious to the receiving solicitors; waiver does not extend to privileged annexes or related documents unless positive reliance is placed on them. Specific disclosure of non-privileged annexes (K9, K10) ordered; other requests denied for lack of evidence or excessive generality.

Court Disposition

Application partially allowed and partially denied

Orders

  • Defendants permitted to use the English brief document.
  • Claimant to disclose annexes K9 and K10 if they exist or note their absence.