intellectual property boston college law school march 5, 2007 patent – infringement 2
TRANSCRIPT
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Intellectual Property
Boston College Law School
March 5, 2007
Patent – Infringement 2
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Doctrine of Equivalents
• Tests– Substantially same function, way, result– Insubstantial differences
• Evidence– Circumstances, purpose, prior art– Would PHOSITA have viewed interchangeable?
• Details– All-elements rule– Measured at time of infringement
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Patent No. 5,205,473
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Patent No. 5,205,473
• “What is claimed is:– 1. A recyclable, insulating beverage
container holder, comprising:• a corrugated tubular member comprising
– cellulosic material and at least a first opening therein for receiving and retaining a beverage container, said corrugated tubular member comprising
• fluting means for containing insulating air; said fluting means comprising fluting adhesively attached to a liner with a recylable adhesive
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Doctrine of Equivalents
• Limitations– Claim on prior art– Prosecution history estoppel– Disclosed but not claimed
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Warner Jenkinson
pH
9.08.07.06.05.0
BoothHilton
OriginalHilton
Amended Warner
?
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Festo
• Two issues– What kinds of amendments trigger estoppel?– Does estoppel apply to all equivalents based on
the amendment?
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Doctrine of Equivalents
Claims
Prior Art
ProsecutionHistoryEstoppel
Equivalentsfor PioneerInvention
Equivalentsfor MinorInvention
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Patent No. 5,205,473
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Patent No. 5,205,473
• “What is claimed is:– 1. A recyclable, insulating beverage
container holder, comprising:• a corrugated tubular member comprising
– cellulosic material and at least a first opening therein for receiving and retaining a beverage container, said corrugated tubular member comprising
• fluting means for containing insulating air; said fluting means comprising fluting adhesively attached to a liner with a recylable adhesive
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Patent No. 5,425,497
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Problem 3-11• “1. A pocket toothbrush having an exterior structure
resembling a traditional fountain pen case comprising– a. a removable cylindrical end cap cover,
– b. a main cylindrical body shaft over at least one end of which said end cap cover fits …,
– c. said cylindrical body shaft having one end which contains toothbrush bristles …,
– d. said cylindrical body shaft including an interior passage extending into said bristle end and having at least one termination opening in the area at the base of said bristles,
– e. a movable plunger extending into said cylindrical body shaft in said main cylindrical body shaft,
– f. said body shaft including an interior space for the accommodation of a charge of toothpaste to be fed to said bristles by operation of said movable plunger …”
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Administrative
• Assignment for next class– Finish IV.C – Infringement
• No class this Friday– Will reschedule
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Patent Scope
Claims
Prior Art
ProsecutionHistoryEstoppel
Equivalents
Reverse Doctrineof Equivalents