Invalidity dossier
US 698511
Syringe.
Current assignee: Individual
Added 9/23/2026, 7:28:28 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 698,511
Title: Syringe
Inventor: Frederick H. Jones, of Wakefield, county of Middlesex, Massachusetts
Assignee: Individual (Google Patents lists "Individual" as both original and current assignee)
Application filed: September 4, 1901 (Serial No. 74,264)
Patent granted/dated: April 29, 1902
Publication date: April 29, 1902
Legal status: Expired – Lifetime (anticipated expiration April 29, 1919)
Classification: A61M3/00, A61M3/02, A61M3/0262 (medical syringes/enemata; irrigators characterized by manually pumped liquid supply, e.g., squeezing a bulb)
Source: https://patents.google.com/patent/[US698511](/patent/US698511)/en
Purpose. The invention relates to syringes "particularly adapted as a vaginal syringe." Its stated object is a syringe whose bulb has a conical end portion shaped to project into and approximately fit the vagina, with a nozzle (preferably a spray-nozzle) and means whereby liquid is ejected only from the nozzle, is prevented from escaping past the conical end portion, and is thereafter drawn back into the bulb by suction through orifices independent of the nozzle.
Plain-language scope. A soft-rubber bulb carries a conical end portion. At its extremity a cup is attached (e.g., pushed into the orifice and held by friction). The cup has one or more inlet check-valves — "ordinary tack-valves," four shown — and a nozzle projecting centrally from the cup's bottom, either integral with or separate from the cup (hard rubber preferred). Liquid is ejected through the nozzle by compressing the bulb, automatically closing the check-valves; as the bulb expands, the valves open and liquid collected in the cup is drawn back into the bulb. The cup's collecting action keeps liquid from passing over the outside of the conical end portion and escaping. Figures 1–3 show the syringe in elevation/partial section, a vertical section, and the cup detail. The single claim recites the bulb-plus-cup combination: a cup seated in the bulb's mouth with an outlet-opening and nozzle, an unobstructed passage between nozzle and bulb, one or more inlet-openings opening into the bulb for returning discharged liquid, and a check-valve per inlet-opening automatically operated by bulb contraction and expansion.
What the excerpt does not establish. It does not evidence any litigation, ownership transfer or assignment history, validity, enforceability, or substantive prior-art comparisons beyond the "Similar Documents" and "Cited By" listings. It does not describe the drawings' visual details, exact dimensions, materials beyond preferences noted, or commercial embodiments.
Generated 10/1/2026, 9:42:02 PM
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Litigation summary
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Proceedings on file (0)
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PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Prior art
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Obviousness
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Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.