Wallace and Others v. Tullis, Russell & Co., Ltd [1921] ScotLR 73 (15 November 1921)

Wallace and Others v. Tullis, Russell & Co., Ltd [1921] ScotLR 73 (15 November 1921)

The patent specification failed to sufficiently describe the method of removing digested grass from digesters so as to enable a skilled person to perform the invention without further invention or undue experimentation. The claim did not cover a general principle but was limited to the specific method and apparatus described. The defenders did not use the combination claimed by the pursuers and thus did not infringe. The patent was invalid for want of sufficient description and subject-matter.

Citation
[1921] ScotLR 73
Parties
Pursuers: William Morgan Wallace and Others; Defenders: Tullis, Russell & Company, Limited
Jurisdiction
Scotland
Judgment Date
15 November 1921
Procedural Posture
Patent Infringement and Validity Action / Appeal (reclaiming Note) From Lord Ordinary's Judgment
Outcome
Defenders assoilzied (absolved); patent held invalid for insufficient description; no infringement found.
Legal Topics
Patent Validity, Patent Infringement, Specification Sufficiency, Subject Matter Eligibility
Intellectual Property Patent Law Patent Validity Patent Infringement Specification Sufficiency Subject Matter Eligibility

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Parties

William Morgan Wallace and Others

Pursuers

Tullis, Russell & Company, Limited

Defenders

Procedural Posture

Patent Infringement and Validity Action / Appeal (reclaiming Note) From Lord Ordinary's Judgment

Legal Issues

  1. 1 Whether the patent specification sufficiently described the method to enable a skilled person to perform the invention
  2. 2 Whether the patent claimed a general principle or was limited to a specific method and apparatus
  3. 3 Whether the defenders infringed the patent

Ratio Decidendi

The patent specification failed to sufficiently describe the method of removing digested grass from digesters so as to enable a skilled person to perform the invention without further invention or undue experimentation. The claim did not cover a general principle but was limited to the specific method and apparatus described. The defenders did not use the combination claimed by the pursuers and thus did not infringe. The patent was invalid for want of sufficient description and subject-matter.

Court Disposition

Defenders assoilzied (absolved); patent held invalid for insufficient description; no infringement found.

Orders

  • Action dismissed; defenders absolved from conclusions of the summons.