Overview
Case summary
Electric Boot & Shoe Finishing Company sued Alexander E. Little and others for alleged infringement of reissue patent No. 11,144 issued to William W. Crocker for a process of blackening and burnishing boots and shoes. The patent claimed a process of dyeing parts black, treating with wax or waterproof compound, and polishing with a rapidly moving yielding surface. The court found that while the materials were sufficiently known in the art, the patent was invalid because the specification contained less than the whole truth about the invention. The patentee knew the dye should be waterproof and the polishing surface should be an inflated air cushion, but these requirements were not disclosed in the specification. The court held this implied a purpose to deceive the public under Rev. St. § 4920, and dismissed the bill with costs to defendants.
Abstract
Plaintiff sued defendants for infringement of a reissue patent covering a process for blackening and burnishing boots and shoes involving dyeing, treating with wax or waterproof compound, and polishing with a yielding surface. The court invalidated the patent because the specification omitted key details known to the patentee, such as the need for waterproof dye and an inflated air cushion polishing surface, implying a purpose to deceive the public. The bill was dismissed with costs to defendants.
Opinion of the court
opinionCARPENTER, District Judge
- Patent specification omitted crucial requirements known to inventor
- Omission implies purpose to deceive public
- Patent invalid under Rev. St. § 4920
- Materials were sufficiently known in the art despite practical supply difficulties
Jurisdiction
not challenged- Suit filed in Circuit Court, D. Massachusetts alleging infringement of patent
Procedural posture
- Validity of patent based on deceptive specifications
Legal categories
Case record
Issues & holdings
de novo
Patentee knew dye should be waterproof and polishing surface must be inflated air cushion but failed to disclose these requirements in specification
Issue preserved for review
de novo
Materials were sufficiently known to those familiar with the art, but patent is still invalid due to deceptive omission
Issue preserved for review
Holdings of the court
Error analysis
- Patent specification failed to disclose that dye should be waterproof and polishing surface must be inflated air cushion — procedural · error foundNot applicable - error goes to validity of patent · not applicable
Statutory interpretation
1Standards of review
- Patent validity based on deceptive specifications — de novo Legal determination of whether patent specifications comply with statutory requirements
- Sufficiency of patent description — de novo Legal interpretation of patent claims and specifications
Timeline
Reissue letters patent No. 11,144 issued to William W. Crocker for blackening and burnishing boots and shoes
Patent at issue in infringement case
Electric Boot & Shoe Finishing Company files bill in equity against Little et al. alleging patent infringement
Initiates the lawsuit
Circuit Court dismisses bill with costs to defendants, finding patent invalid due to deceptive specifications
Outcome: Dismissal with costs
Final judgment in the case
Facts & evidence
Key facts
5 facts- Patent reissue No. 11,144 issued February 10, 1891 to William W. Crocker for blackening and burnishing boots and shoes
- Claim covers process of dyeing parts black, treating with wax or waterproof compound, and polishing with rapidly moving yielding surface
- Prior process used ink with sediment fixed by buffing and rubbing with hard heated surface
- Patentee knew dye should be waterproof and polishing surface should be inflated air cushion, but specification did not disclose these requirements
- Specification described polishing surface as cotton cloth or chamois skin covering felt or other suitable material
Procedural history
1 steps- Complainant filed bill in equity seeking injunction against alleged patent infringement
Evidence in the record
- Patentee's testimony that waterproof dye is 'an important feature'
- Patentee's testimony that inflated air cushion 'is necessary to be practical' and 'without this it would not be my process'
- Reissue letters patent No. 11,144
- Patent specification describing process
Objects of relevance
Authorities
Cited authorities (1)
Statutes
- Rev. St. § 4920 (patent validity requirement)
Standards & doctrines
- De novo review of patent validity
- Requirement that patent specification disclose whole truth
Legal principles applied
- Patentee must fully disclose invention in specification
- Omission of known important features implies deceptive intent