Weiss v Lufft [1941] HCA 19
Amendments to patent claims require corresponding alteration of the body of the specification so as to conform to the more restricted claim; ambiguity arising from both the claims and the description precludes amendment.
- Parties
- Appellant: Adolf Weiss; Respondent: Ernst Lufft; Respondent: Stanley Lufft; Respondent: R. Hoe & Company Incorporated; Other: Commissioner of Patents
- Jurisdiction
- Australia
- Procedural Posture
- Appeal From Administrative Decision / Appellate
- Outcome
- Appeal and cross-appeal dismissed
- Legal Topics
- Patents, Amendment of Specification, Ambiguity in Patent Claims
Case Brief
Summary, issues, holding and outcome
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Parties
Adolf Weiss
Appellant
Ernst Lufft
Respondent
Stanley Lufft
Respondent
R. Hoe & Company Incorporated
Respondent
Commissioner of Patents
Other
Procedural Posture
Appeal From Administrative Decision / Appellate
Legal Issues
- 1 Whether amendments to patent claims may be made without corresponding amendment to the body of the specification
- 2 Whether the proposed amendments create ambiguity or substantially change the invention claimed
Ratio Decidendi
Amendments to patent claims require corresponding alteration of the body of the specification so as to conform to the more restricted claim; ambiguity arising from both the claims and the description precludes amendment.
Court Disposition
Appeal and cross-appeal dismissed
Orders
- Appellant to pay costs of Deputy Commissioner and of respondents in this Court
Full Case Text
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