US 5665069

I'll search for authoritative information on this patent number.

US Patent 5,665,069 — Verified Summary

Bottom line: This is a real, easily-confirmed US patent. It is expired (lapsed in 2001 for nonpayment of maintenance fees), so it has no enforceable term and shows no CAFC 2026 docket activity in my searches — you would not expect an appeal from an expired, unasserted patent. I found no litigation, PTAB, or Federal Circuit proceeding tied to this number.

Bibliographic data

Uncertainty noted: One aggregator (Unified Patents portal) lists the priority date as 1996-07-18, while the authoritative USPTO/Google Patents record gives filing/priority 1996-07-19. I treat 1996-07-19 as correct but flag the one-day discrepancy. Also note: the search surfaced a Japanese patent JP 5665069 B2 (Olympus/Yamanashi University, medical device) — this is a different, unrelated patent, not a family member of US 5,665,069. Do not conflate the two.

Abstract (as issued)

A device useful for injecting anesthetic into the peribulbar region of the eye. It includes a needle assembly functionally integrated with a flange shaped to provide pressure to the desired region. Combined with a syringe and needle, it allows injection of anesthetic under pressure directed toward the peribulbar region, distributing anesthetic throughout the peribulbar space more efficiently.

Plain-language overview of the independent claims

The patent has only two claims, both independent — one apparatus claim and one method claim. Notably, the issued claims are narrower than the specification, because they are specifically limited to a threaded (screw-on) connector between the flange and the needle hub, not the friction-fit, snap-fit/open-channel, or integral-molded embodiments described in the specification.

Claim 1 — Device (apparatus):
A peribulbar anesthesia delivery device made of two cooperating parts:

1. A syringe assembly comprising a needle hub (with a proximal end, a distal end, and a first threaded connector between them), a hollow needle 0.5–0.75 inches long on the distal end, and a syringe barrel with a plunger attached at the proximal end.
2. A flange releasably attached to the syringe assembly, having:
   • a semi-circular skin-contacting side that transmits enough pressure to the space between the inferior orbital ridge and lower eyelid to prevent anesthetic from depositing throughout the tissue in that space (i.e., it pushes the anesthetic rearward into the peribulbar space);
   • a semi-circular syringe-receiving side; and
   • a tunneled portion between the two sides with a second threaded connector that engages the hub's first threaded connector,
     with the hub's proximal end sitting proximal of the syringe-receiving side and its distal end proximal of the skin-contacting side (so the needle passes through the flange).

Claim 2 — Method:
Recites the same device from Claim 1 (in "providing" form, elements i and ii) and adds the method step of injecting anesthetic into the peribulbar region while simultaneously applying pressure to the space between the inferior orbital ridge and lower eyelid, to prevent anesthetic from depositing throughout the tissue in that space.

Why this matters practically

• Both independent claims require the threaded connector means and the 0.5–0.75 inch needle limitation — the commercially interesting "snap-on"/integral-molded variants from the description are not claimed.
• Because the patent lapsed in 2001, any 2026 "docket" presence would be anomalous. If your project specifically needs CAFC 2026 activity on 5665069, I found none; I recommend confirming directly via the CAFC docket search and PACER before relying on that negative, since I cannot search those databases exhaustively here.

Sources: Google Patents US5665069 (https://patents.google.com/patent/US5665069/en); USPTO patent image (http://patentimages.storage.googleapis.com/2b/13/1d/03623ba7c7770d/US5665069.pdf); Justia (https://patents.justia.com/patent/5665069); EveryPatent (http://www.everypatent.com/comp/pat5665069.html).

I'll search for litigation records involving US patent 5665069 across the sources you specified.

The initial searches surfaced unrelated results (including the differently-numbered Japanese patent JP 5665069 B2). Let me target the litigation-specific databases directly.

Let me try more targeted queries on litigation-tracking sources.

Litigation Search — US Patent 5,665,069

Conclusion: I found no litigation, PTAB proceeding, ITC investigation, or Federal Circuit appeal involving US Patent 5,665,069.

Case-by-case listing

There are no cases to list. No plaintiff, defendant, jurisdiction, case number, filing date, or outcome can be reported because no proceeding was located for this patent number.

What I searched and what came back

I do not have live access to PACER, Docket Alarm's full paywalled index, or the Unified Patents litigation dashboard's internal search from these results, so this is a strong negative rather than an exhaustive one. The searches I did run, however, are precisely the ones that would surface an asserted patent, and nothing relevant appeared.

Why a negative is the expected and technically coherent answer

This is not merely a gap in my searching — the patent's own prosecution and maintenance history make litigation implausible, and this corroborates the earlier summary section:

1. The patent lapsed in 2001, only ~4 years after issuance. Per the Legal Events record: maintenance-fee reminder mailed 2001-04-03; "Lapse for failure to pay maintenance fees" 2001-09-09; "Lapsed due to failure to pay maintenance fee" 2001-11-13. A patent that lapsed for non-payment in 2001 has had no enforceable rights for roughly a quarter-century. There is no live right to assert, so there would be no infringement action to file — and none to defend.

2. The claims were never monetized. The record shows only the original 1996 assignment to the two individual inventors (Cumer and Rivera); no assignment to a patent-assertion entity, no reexamination, and no litigation history. The only "cited by" art in the record relates to unrelated hyaluronidase/Alcon/Allegan subject matter, not to any accused product.

3. The issued claims are narrow. As noted in the prior summary, both independent claims require a threaded flange-to-hub connector and a 0.5–0.75 inch needle. The snap-fit/open-channel and integral-molded designs emphasized in the specification were never claimed — narrowing the universe of potential infringers even during the patent's brief enforceable life.

Required caveats (no fabrication)

• I cannot state a case number, party, or outcome, because none exists in any source I could reach. I will not invent one.
• Do not conflate US 5,665,069 with JP 5665069 B2. A Japanese patent bearing the same digits — JP 5665069 B2, "Medical device and living tissue frozen collection device," assigned to the University of Yamanashi and Olympus Medical Systems — appeared repeatedly in my searches. It is a different, unrelated patent (filed 2008, registered 2014, concerning endoscopic biopsy tissue freezing). It is not a family member of US 5,665,069 and is not evidence of any US proceeding.
• If your project requires a definitive negative (e.g., for a freedom-to-operate or validity opinion), confirm directly against PACER (all district courts), the CAFC docket, and the Unified Patents litigation portal using the party names Cumer, Patricia Lynn and Rivera, Peter Ivan, not just the patent number. I could not exhaust those paywalled databases here.

Bottom line

No known litigation. US 5,665,069 was a two-claim, individual-inventor patent that lapsed for nonpayment of maintenance fees in 2001 and was never asserted. Any 2026 docket activity on "5665069" would be anomalous and is most likely a misidentification of JP 5665069 B2 or another patent number.

Sources consulted: Google Patents US5665069 (https://patents.google.com/patent/US5665069/en); USPTO patent image (http://patentimages.storage.googleapis.com/2b/13/1d/03623ba7c7770d/US5665069.pdf); EveryPatent (http://www.everypatent.com/comp/pat5665069.html); Unified Patents litigation portal (https://portal.unifiedpatents.com/litigation/caselist); Google Patents JP5665069B2 (https://patents.google.com/patent/JP5665069B2/en).

I'll verify the structured "no proceedings" result against public sources before drafting.

No PTAB hits surfaced. Let me run two tighter checks — one on the patent's specific number in PTAB/PTAB E2E-related pages, one on the patent owner/inventor.

One more confirmation pass targeting PTAB dockets specifically.

PTAB / AIA Trial Analysis — US 5,665,069

Proceedings overview

Total AIA trial proceedings on US 5,665,069: zero. Breakdown: 0 active, 0 claims invalidated, 0 claims sustained, 0 settled, 0 institution denials — the USPTO Open Data Portal structured block for this patent returns no AIA trial proceedings, and my independent searches of PTAB materials and the open web surfaced no IPR, PGR, or CBM naming this patent. The bottom-line defensive posture is therefore not "the patent has survived two IPRs and is hardened," and it is also not "claims have been canceled — the troll has no case." It is a third thing, which is stronger for a defendant: the patent lapsed in 2001 for nonpayment of maintenance fees and has been unenforceable-forever since 2001-11-13, over a decade before the AIA even created IPRs. No one ever needed to file a PTAB petition against it, because it was already a dead letter by the time AIA trials opened for business on 2012-09-16.

Status reconciliation with the prior section: This is consistent with — and explained by — the previously generated "Patent summary," which establishes expiry for fee nonpayment (reminder 2001-04-03; lapse for failure to pay 2001-09-09; "Lapsed due to failure to pay maintenance fee" 2001-11-13; anticipated expiration 2016-07-19 noted but moot). Absence of PTAB activity is the expected consequence of that lapse, not an artifact of incomplete data.

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No proceeding entries to enumerate

There is no {PROCEEDING_NUMBER} — {Petitioner} v. {Patent Owner} block to fill in. I will not invent one, and the instruction to "not invent proceeding numbers" is dispositive here. Below is the closest thing to a proceeding-level record that actually exists:

Canonical source (authoritative for this task): USPTO Open Data Portal — no AIA trial proceedings indexed for US 5,665,069.
Independent verification (web): No IPR/PGR/CBM hits for "5665069" or "5,665,069" in PTAB decision databases, PTAB E2E-style results, or practitioner commentary. The patent number appears online only in (a) its own bibliographic pages (Google Patents, Justia, EveryPatent), (b) third-party patent prosecution citations, and (c) a Unified Patents portal page reached indirectly via an unrelated Halozyme patent (US 10,301,376 B2).

I flag that I could not run an exhaustive, paginated query against PTAB E2E or PACER from this environment. Given a 2001 lapse, however, the negative is structural rather than a search-coverage gap — see below.

Why 5665069 could never realistically attract an AIA trial

• IPR (35 U.S.C. § 311 et seq.): Available for any patent regardless of filing date, but only from 2012-09-16 forward. By then the patent had been lapsed for 11 years. The only reason to file is to defeat an assertion; a lapsed patent cannot support a live demand, so there is no petitioner incentive and no § 315(b) one-year trigger to react to.
• PGR (35 U.S.C. § 321 et seq.): Unavailable as a matter of law. PGRs reach only patents claiming priority to a post-AIA (on/after 2013-03-16) application, and the petition window closes 9 months after issuance. 5665069 issued 1997-09-09. Non-starter on both prongs.
• CBM (§ 18 of the AIA): Unavailable and now sunset. A peribulbar anesthesia delivery device is not a "covered business method" patent — it recites no financial-product or financial-service practice, and would qualify as a "technological invention" excluded from the program. The CBM transitional program also expired 2020-09-16 for new petitions.
• Collateral consequence: Because there is no AIA trial, there is no § 315(e)(2) estoppel barring anyone, and equally no FWD to cite, no IPR certificate cancelling claims, and no CAFC appeal of an FWD to track. Any "PTAB outcome" representation about this patent is unfounded.

False positives to avoid when docket-searching this number

Two artifacts recurred across my searches and could mislead a docket or claim-number search:

1. JP 5665069 B2 (registered 2014-12-19; published 2015-02-04; Olympus Medical Systems / University of Yamanashi; title roughly "medical device and biological tissue cryo-sampling device," 9 claims). This is the same unrelated Japanese patent flagged in the prior section. It is not a family member of US 5,665,069 — the Google Patents family data for US 5,665,069 shows a single US member and "NONE" for family members in the EP search-report annex. Do not conflate.
2. Priority-date discrepancy (re-confirmed): the Unified Patents portal page lists US 5,665,069 with priority date 1996-07-18, while Google Patents/USPTO record 1996-07-19. My searches replicated the 1996-07-18 entry exactly where the prior section predicted. I continue to treat 1996-07-19 as correct, per the authoritative record, and flag the one-day variance as an aggregator artifact.

Where the patent actually shows up (prior-art citation, not challenge)

For completeness, the only substantive post-issuance footprint is as cited prior art in others' prosecution and search reports — not as a challenged patent:

• EP 1,522,289 A3 (Alcon / sub-Tenon drug delivery) — cites US 5 665 069 A (CUMER PATRICIA LYNN ET AL) 9 September 1997 * the whole document *.
• RU 2,408,393 C1 ("Перибульбарная анестезия," Federal State Institution MNTK "Mikrokhirurgia glaza") — lists US 5665069 A, 09.09.1997 in its search report.
• US 7,871,607 B2 (Halozyme, soluble glycosaminoglycanases) — cites 5665069 (Cumer et al., 1997-09-09) as a reference.
• A GCC patent publication also cites US 5665069 A (CUMER PATRICIA LYNN et al.) 9 September 1997.

That citation pattern (20+ forward citations in the patent record) is often mistaken for "this patent was heavily litigated." It means the opposite: the disclosure was a useful technical reference and its claims were never worth attacking.

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Strategic summary

Claim status: CANCELED — none. SUSTAINED — none. UNTESTED — both of them (claim 1 and claim 2), because no tribunal ever reached them. The patent has exactly two claims, both independent (an apparatus claim and a method claim), and the previously generated summary correctly notes both are narrowed to a threaded (screw-on) flange-to-hub connection and a 0.5–0.75 inch hollow needle. That narrowing, plus the narrow claim count, is the real defensive asset here — but the decisive asset is expiry. Under 35 U.S.C. § 41(b)/(c), failure to pay the maintenance fee in the applicable window terminated the patent's term; the record shows lapse for failure to pay as of 2001-09-09 and formal lapse notation 2001-11-13. Practically, the patent's enforceable life ended before this century's AIA regime existed.

Estoppel landscape: There is no § 315(e)(2) estoppel running against anyone, because no IPR/PGR was ever instituted. That cuts both ways, but it does not matter much, because there is no § 286 damages window either. Even if a plaintiff tried to assert the patent today (2026-10-01), the six-year lookback under § 286 reaches back only to 2020-10-01 — roughly nineteen years after the patent lapsed. An assertion would be met first by a threshold enforceability/expiry defense, not by an IPR. Should any prior-art defense be needed in a district court, the field is wide open: the eight references cited on the face of the patent (including US 4,639,248 Schweblin, US 4,664,128 Peter F. Lee, US 5,097,839 Becton Dickinson, and US 5,338,309 Becton Dickinson) plus intervening art from the 1996–2001 window are all available with no estoppel overlay.

Pattern signals: None of the classic PTAB patterns are present. No petitioner ever filed against this patent (there is no repeat-petitioner pattern to detect). No patent-owner appeal to the Federal Circuit exists, because there was no adverse Board decision to appeal — consistent with the prior section's finding of no CAFC 2026 docket activity for this number. No defensive aggregator is in the chain; the only Unified Patents touchpoint I found is an incidental portal citation, not a filed proceeding. The assignee is the individual inventor group (Cumer, Patricia Lynn and Rivera, Peter Ivan), with no corporate or NPE owner and no recorded licensing activity.

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Recommended next steps

1. Do not characterize this patent as "PTAB-tested" in any way. There is no FWD to link, no IPR certificate, and no Board disposition. If a demand letter or expert report asserts otherwise, that assertion is unsupported — request the proceeding number and expect none to be produced.
2. Lead with expiry, not invalidity. The primary defense to any assertion of 5665069 is that it lapsed on 2001-11-13 (lapse event 2001-09-09) for failure to pay maintenance fees, and is therefore outside any § 286 damages period available as of 2026-10-01. Link the record: Google Patents US5665069, USPTO patent image, Justia. Confirm the lapse directly in USPTO Patent Center before relying on it in a filing.
3. If you nonetheless need a validity posture (e.g., a declaratory-judgment plaintiff wanting certainty), remember § 311 permits an IPR petition even on an expired patent, but note two practical headwinds: (a) the Board and the Director weigh settled expectations and the age of the claims heavily in discretionary-denial analysis — a patent lapsed since 2001 is the extreme case; and (b) under the institution framework announced 2025-10-16, the Director personally decides institution in consultation with at least three APJs, and the Office's October 2025 proposed rules would bar IPRs against patents that have already survived a validity challenge in another forum. Neither development creates a bar here, but both make a discretionary-denial outcome more likely.
4. Confirm the negative mechanically, once. Run the number through PTAB E2E and USPTO Patent Center, and check CourtListener for any district-court or CAFC proceeding naming Cumer or Rivera as plaintiff. My searches found none and found no litigation in the prior section either; the two results agree.
5. Watch the number-collision trap. When searching, exclude JP 5665069 B2 (Olympus/Yamanashi cryo-biopsy device) and note that any aggregator showing priority date 1996-07-18 is propagating a known one-day error; the authoritative date is 1996-07-19.

Constraint acknowledgement: no proceeding numbers, panels, FWD dispositions, or appeal dockets are stated above because none exist for this patent; I have not extrapolated from the JP 5665069 B2 record or from other patents' prosecution citations. The "no proceedings" conclusion rests on the canonical USPTO ODP block plus corroborating web searches, with the search-coverage caveat stated in §"No proceeding entries to enumerate."

I'll verify the assignment record against the Assignment Center and cross-reference sources before writing.

Assignment-Chain Reconstruction — US 5,665,069

Search basis: Google Patents legal-events record (which mirrors the USPTO assignment index), the issued patent front page and "Assignee" field, the USPTO Assignment Center / legacy Assignment Search index (https://assignmentcenter.uspto.gov/ and https://assignment.uspto.gov/patent/index.html), Justia and EveryPatent copies of the patent, and targeted web queries against "5665069" + assignment/reel-frame terms. The interactive Assignment Center requires a session-based search, so the record below is reconstructed from the indexed USPTO assignment data surfaced in those sources.

Headline finding: Only one assignment is recorded for this patent — the original inventor-to-individuals assignment executed at filing. There is no post-issuance chain at all, which is why the analysis below is short by necessity rather than by omission.

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Inventors

Pattern notes:

• No employer assignment. This is the notable structural fact about the inventorship: neither inventor is recorded as having an employer with rights. The application was filed 1996-07-19 by two individuals and the only recorded conveyance is a same-day mutual assignment between those two individuals (see timeline). That is consistent with independent inventors, not with a corporate R&D program. There is no "all inventors depart the original assignee within 12 months" signal because there was never a corporate assignee to depart from.
• Field/occupation inference: The specification is written from the standpoint of a practitioner performing peribulbar blocks (clinical Examples 1–3 describe actual patients and reported block-success rates), so at least one inventor is plausibly a clinician. I cannot confirm employer or specialty from the assignment record, and I will not guess.
• One-day priority discrepancy (carried forward from the prior section, still unresolved). Unified Patents' index lists the priority date as 1996-07-18; the authoritative Google Patents/USPTO record gives filing and priority 1996-07-19, and the assignment reel 008242/0217 is dated 1996-07-19. I treat 1996-07-19 as correct and flag the one-day variance as an indexing artifact. This does not affect any ownership conclusion.

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Original assignee

"Individual" — i.e., the two named inventors, Patricia Lynn Cumer and Peter Ivan Rivera, jointly, per the front page and the assignment record. Google Patents lists the current assignee as Cumer, Patricia Lynn.

• Product embodying the claims: No commercial product is evidenced anywhere in the record. The specification describes the device as preferably pre-sterilized and disposable ("It is also envisioned that preferably the device will be disposable"), and the Examples describe clinical use of a prototype-like device — not manufacture or sale by an entity. There is no manufacturer, distributor, or brand identified.
• Primary line of business: None applicable — the assignee is a pair of natural persons, not a company.
• Current status: No corporate-status event exists to report. The patent went abandoned: maintenance-fee reminder mailed 2001-04-03; "Lapse for failure to pay maintenance fees" 2001-09-09; "Lapsed due to failure to pay maintenance fee" 2001-11-13; recorded as "Patent expired due to nonpayment of maintenance fees under 37 CFR 1.362." I found no bankruptcy filing, dissolution, or asset sale involving either inventor, and no evidence either way on their personal circumstances.

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Assignment timeline

• 1996-07-19 (executed) / recorded 1996-07-19 — Reel 008242/0217
  • Conveyance: Assignment ("ASSIGNMENT OF ASSIGNORS' INTEREST")
  • Assignor: Cumer, Patricia Lynn; Rivera, Peter Ivan
  • Assignee: Cumer, Patricia Lynn (Texas) and Rivera, Peter Ivan (Texas) — the same two individuals as joint owners
  • Correspondent: Not available in the sources I could reach. The Google Patents / USPTO legal-events mirror for this reel exposes the conveyance text, the assignor/assignee names, and the reel/frame, but not the correspondence block from the PTO-1595 cover sheet. I could not retrieve the reel 008242/0217 cover-sheet image at legacy-assignments.uspto.gov to read the correspondent of record, so I am expressly not naming an attorney or firm here. This is a data gap, not a negative finding. Because there is only one link, there is also no recurrence to flag.
  • Context: Joint-inventor ownership confirmation / internal allocation among the two inventors. Executed on the application's filing date, transferring the inventors' rights to the two of them as individuals. This is not an acquisition, fire-sale, securitization, or transfer-to-asserter — there was no third party on either side.

That is the entire recorded chain. There are no post-issuance assignments, no security interests, no mergers, no name changes, no licenses of record, and no corrective assignments for US 5,665,069. Per the task instructions, I am stating that plainly: the Assignment Center has no records for this patent beyond the original 1996 inventor assignment. The practical meaning is that there is nothing in the public chain-of-title record suggesting anyone other than the two named individuals — or their successors in interest, if any, that were never recorded — ever held rights. Because the patent lapsed in 2001, an unrecorded later transfer would be legally inert in any event.

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Timeline diagram

timeline
    title Ownership of US 5665069
    1996 : Filed 19 Jul 1996
         : Reel 008242 0217 assigns to Cumer and Rivera
    1997 : Patent issued 9 Sep 1997
    2001 : Lapsed for unpaid maintenance fee
    2016 : Nominal 20 year term would have ended

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NPE / troll-pattern signals

Supplementary observation (not one of the eight signals, but relevant to troll-pattern screening): the patent was subject to narrowing during prosecution. The two issued claims both require a threaded flange-to-hub connector (the "first threaded connector means" / "second threaded connector means" limitations) and a 0.5–0.75 inch needle, whereas the specification's more commercially intuitive snap-fit/open-channel and integral-molded embodiments were never claimed. A narrow two-claim asset is a poor candidate for mass assertion — which is consistent with the observed absence of any assertion campaign.

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Verdict

Insufficient data (no records, or only the original assignment).

The entire documented chain of title is a single file-wrapper assignment at Reel 008242/0217, executed and recorded 1996-07-19, conveying rights from inventors Cumer and Rivera to those same two individuals; there are no post-issuance assignments of any kind, no corporate or LLC assignee, and no asserter, aggregator, or correspondent pattern to evaluate. The patent self-neutralized through nonpayment of maintenance fees in 2001 (lapse 2001-09-09; confirmation 2001-11-13), and no litigation or NPE activity was found for US 5,665,069 — the only "5665069" hits in asserter databases point to the unrelated JP 5665069 B2 (Yamanashi University / Olympus Medical Systems). This is not an NPE classification case; it is a case of an uncommercialized, individually owned, long-since-lapsed patent.

Verify at: USPTO Assignment Center — https://assignmentcenter.uspto.gov/ (search patent number 5665069 or reel 008242 / frame 0217). If a definitive chain-of-title certification is required, order the reel 008242/0217 cover sheet directly, since that document holds the correspondent of record I was unable to read from the indexed data.

Caveats (no fabrication): I have not named a correspondent, an employer, a product, or a case because none is evidenced in any source I could reach. The one-day priority discrepancy (1996-07-18 vs. 1996-07-19) is flagged but immaterial to ownership. Do not conflate US 5,665,069 with JP 5665069 B2.

I'll search for the authoritative records of each cited reference for US 5,665,069. Let me start with the patent itself and several of its cited references in parallel.

Let me search for the remaining cited references.

I hit the tool-call limit partway through, so I'll now write up the analysis using the authoritative patent text you supplied (which contains the complete "Patent Citations (8)" list) plus the reference details I retrieved before the cutoff. I'll flag explicitly which references I could fully verify this session and which I could only identify bibliographically.

Prior-art analysis for US 5,665,069

Scope and a needed clarification

You asked me to "search the USPTO database for 5665069" and examine "each patent citation for 5665069." The relevant set is the eight references cited on the face of the patent (the examiner-cited "Patent Citations (8)" list, mirrored by USPTO/Google Patents/Justia). Every one is an examiner citation, all pre-date the 1996-07-19 filing date, and all therefore qualify as prior art under 35 U.S.C. §102(a) (and/or (b)).

One framing point that governs the whole §102 analysis, carried over from the earlier summary rather than repeated: both independent claims (1 and 2) require (a) a semi-circular pressure-directed flange with (b) a second threaded connector means engaging the hub's first threaded connector, plus (c) a 0.5–0.75 inch needle. Single-reference anticipation under §102 requires one reference to disclose every element. No reference in this list does. So the honest answer is that none of the eight anticipates claims 1 or 2 — they are background / §103 combination art. I detail why per reference below.

The eight cited references at a glance

Sources: full patent text (Patent Citations (8)); Justia US5665069 (https://patents.justia.com/patent/5665069); Google Patents US5665069 (https://patents.google.com/patent/US5665069/en). Note the Justia table renders EP 0432363 as "432363A2 / June 1991 / DEX" and the WO as "WO9305833 / April 1993 / WOX" — same references, OCR-mangled.

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Reference-by-reference analysis

1. US 4,639,248 A — "Syringe" (Schweblin)

• Full citation: US 4,639,248 A, "Syringe," inventor Jean Denis Schweblin; CH priority 1984-12-07; US app. 06/801,057 filed 1985-11-22; issued 1987-01-27.
• Description: A single-hand-operable syringe whose body carries, at its rear end, a "first bearing surface" consisting of a substantially semi-circular plate (with a smaller semi-circular inner extension), and a piston whose rod projects rearward so the syringe can be aspirated/injected one-handed. The semi-circular plate is a finger/palm bearing surface on the operator end — not a patient-contacting flange.
• §102 relevance to claims 1–2: None for anticipation. It discloses a syringe with a semi-circular plate, which superficially echoes the claim's "semi-circular" flange language, but that plate sits at the proximal end as an operator bearing surface. It has no needle hub with a first threaded connector, no skin-contacting pressure flange dimensioned for the inferior orbital ridge, no tunnel with a second threaded connector, and no 0.5–0.75 inch needle limitation. It lacks multiple essential elements; at most it is a §103 secondary reference for a "semi-circular plate on a syringe."
• Source: Google Patents US4639248 (https://patents.google.com/patent/US4639248).

2. US 4,664,128 A — "Single-hand controlled aspiration device" (Lee)

• Full citation: US 4,664,128 A, "Single-hand controlled aspiration device," assignee Peter F. Lee, Inc.; filed 1983-12-16; issued 1987-05-12.
• Description: A disposable, one-hand-operated aspiration/biopsy syringe. It has a syringe barrel, a plunger biased by a spring, a finger grip member with flange portions (e.g., arcuate/flat flange portions 19) extending outwardly to support the user's fingers, and a needle hub (optionally transparent, optionally a Luer-Lok connection).
• §102 relevance to claims 1–2: None for anticipation. It discloses a syringe/hub/needle combination and "flange portions," but those flanges are operator finger grips on the barrel, not a body-contacting pressure flange for directing anesthetic. No tunnel, no threaded flange-to-hub connector, no peribulbar geometry, no 0.5–0.75 inch needle. Relevant only as generic background for syringe flanges and hub attachment (e.g., the Luer-Lok mention), i.e., §103 context at best.
• Sources: Google Patents US4664128; Justia company profile (https://companyprofiles.justatic.com/patent/[4664128](/patent/4664128)).

3. US 5,009,643 A — "Self-retaining electrically insulative trocar sleeve and trocar" (Reich et al.)

• Full citation: US 5,009,643 A, "Self-retaining electrically insulative trocar sleeve and trocar," inventors Harry Reich and Peter Koch; assignee Richard Wolf Medical Instruments Corp.; filed 1989-08-09; issued 1991-04-23.
• Description: A laparoscopic trocar sleeve with an enlarged annular flange adjacent its proximal end, an annular stop, and a helical thread on the exterior that lets the sleeve be screwed into the abdominal wall to prevent removal. Used with a trocar having a stop that sets insertion depth.
• §102 relevance to claims 1–2: None for anticipation. This is the reference most likely cited for the concepts of an annular flange combined with a threaded engagement and a depth stop — the examiner may have viewed it as showing a flange plus threading. But it is a trocar sleeve for the abdomen, with no needle hub/syringe assembly in the claimed sense, no skin-contacting pressure-surface dimensioned for the inferior orbital ridge, no anesthetic-directing function, and no 0.5–0.75 inch needle. It cannot meet all elements of either claim, so no anticipation; possible §103 art for "threaded flange-like retention."
• Source: Google Patents US5009643 (https://patents.google.com/patent/US5009643); EveryPatent (http://www.everypatent.com/comp/pat5009643.html).

4. EP 0 432 363 A2 — "Locking trocar sleeve" (Dexide, Inc.)

• Full citation: EP 0 432 363 A2, "Locking trocar sleeve," applicant Dexide, Inc.; filed 1989-11-22; published 1991-06-19.
• Description: A trocar sleeve with a locking/retaining structure to hold the sleeve in the body wall. It appears to belong to the same Dexide "Locking trocar sleeve" family that produced US 5,122,122, US 5,232,451, and US 5,330,497 (all "Locking trocar sleeve," Dexide).
• §102 relevance to claims 1–2: None for anticipation. Same field-mismatch as Reference 3: a laparoscopic access sleeve, not an ophthalmic anesthesia device. No pressure-directed peribulbar flange, no needle hub, no threaded flange-to-hub tunnel. Background/§103 only. Caveat: I identified this reference bibliographically and by family, but did not retrieve its full text this session, so I describe it at the level of its title/family.

5. US 5,092,837 A — "Method for the treatment of glaucoma"

• Full citation: US 5,092,837 A, "Method for the treatment of glaucoma," inventor Robert Ritch et al.; filed 1989-12-20; issued 1992-03-03.
• Description: A method patent relating to treating glaucoma (ophthalmic surgical/therapeutic method).
• §102 relevance to claims 1–2: None for anticipation. It is relevant in subject-matter area only — it was likely cited because it establishes the ophthalmic-method context (glaucoma, intraocular pressure, eye surgery) that the patent's own Example 1 references. It discloses no flange, no threaded connector, no needle-hub assembly, and none of the structural elements of claim 1 or the injecting-plus-pressure step of claim 2. It cannot anticipate. Caveat: I did not retrieve the full text of this reference this session; the description above is limited to what its title and citation context support, and I will not attribute specific structures to it.

6. US 5,098,389 A — "Hypodermic needle assembly" (Cappucci, Becton Dickinson) — closest art

• Full citation: US 5,098,389 A, "Hypodermic needle assembly," inventor Cappucci; assignee Becton, Dickinson and Company; filed 1990-06-28; issued 1992-03-24.
• Description: A hypodermic needle assembly expressly described for retrobulbar injections. It has a rigid handle with a front flange, an introducer needle, and a telescopically mounted blunt-ended cannula that can be advanced a controlled distance beyond the sharp needle to limit penetration depth, with stops to control travel. The specification notes peribulbar techniques require higher anesthetic volume and diffusion aids (massage or a Honan balloon).
• §102 relevance to claims 1–2: None for anticipation, but it is the most on-point reference and the strongest §103 candidate. It is in the exact technical field (ophthalmic block anesthesia, retrobulbar/peribulbar, needle-depth control) and has a "flange" and "depth-stop" structure. However, it lacks: (i) the semi-circular pressure-directed skin-contacting flange dimensioned for the space between the inferior orbital ridge and lower eyelid; (ii) the tunnel with a second threaded connector engaging a first threaded connector on the needle hub; and (iii) the 0.5–0.75 inch needle recitation (it discusses a 26-gauge cannula of ~0.018 in OD, i.e., a different structure/parameter). So it cannot singly anticipate. It is the natural primary reference an examiner would combine with a flange/threading reference for a §103 rejection.
• Sources: Google Patents US5098389 (https://patents.google.com/patent/[US5098389A](/patent/US5098389A)); uspto.report (https://uspto.report/patent/grant/[5098389](/patent/5098389)).

7. WO 93/05833 A1 — "Simplified security syringe" (Jesgamabe, S.L.)

• Full citation: WO 93/05833 A1, "Simplified security syringe," applicant Jesgamabe, S.L.; filed 1991-09-18; published 1993-04-01.
• Description: A "security"/safety syringe (a syringe incorporating a safety or needle-shielding feature per the title).
• §102 relevance to claims 1–2: None for anticipation. A safety-syringe disclosure does not show a peribulbar pressure flange, an inferior-orbital-ridge-contacting semi-circular surface, or a threaded flange-to-hub tunnel. It could relate only to general syringe architecture. Caveat: identified bibliographically; full text not retrieved this session, so I do not assert specific structural features beyond the title.

8. US 5,338,309 A — "Syringe having two component barrel" (Imbert, Becton Dickinson)

• Full citation: US 5,338,309 A, "Syringe having two component barrel," inventor Imbert; assignee Becton, Dickinson and Company; filed 1992-07-21; issued 1994-08-16.
• Description: A syringe with a barrel constructed from two components (e.g., a tip/barrel connection arrangement), i.e., a syringe-barrel/hub-connection disclosure.
• §102 relevance to claims 1–2: None for anticipation. Relevant at most to the "syringe assembly … needle hub … syringe barrel" sub-elements and to hub/barrel connection mechanics (Luer-type attachment). It discloses nothing about a pressure-directed peribulbar flange, the inferior-orbital-ridge geometry, a flange-to-hub threaded tunnel, or the 0.5–0.75 inch needle, and nothing about the claim-2 injecting-while-pressing method step. Caveat: identified bibliographically and by its title/family; full text not retrieved this session.

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§102 bottom line

• No single cited reference anticipates claim 1. Claim 1 requires the combination of (i) a needle hub with a first threaded connector, (ii) a 0.5–0.75 inch hollow needle, (iii) a syringe barrel with plunger, and (iv) a releasably attached semi-circular, pressure-transmitting flange with a tunneled second threaded connector. Each reference is missing at least (i)–(iv); several miss all of them.
• No single cited reference anticipates claim 2. Claim 2 recites the identical device and adds the step of injecting anesthetic into the peribulbar region while simultaneously applying pressure to the inferior-orbital-ridge/lower-eyelid space. Only US 5,098,389 even operates in the retrobulbar/peribulbar context, and it discloses neither the claimed pressure flange nor the claimed method step.
• What these references actually are: examiner-cited background and potential §103 combination art. The strongest pairing for an obviousness challenge would be US 5,098,389 (peribulbar/retrobulbar needle assembly with a flange and depth control) as primary, optionally in view of US 5,009,643 or EP 0 432 363 (flange + threaded retaining sleeve) and/or US 4,639,248 (semi-circular plate) / US 4,664,128 (barrel flange) — but that is a §103 theory, not §102 anticipation.

Caveats (no fabrication)

• I fully retrieved and verified reference text for US 4,639,248, US 4,664,128, US 5,009,643, and US 5,098,389. For EP 0 432 363, US 5,092,837, WO 93/05833, and US 5,338,309 I could only confirm the bibliographic data from the authoritative citation list and a family cross-reference (for the Dexide sleeve); I did not retrieve their full texts in this session, so my descriptions of those four are deliberately limited to what the titles and citation context support. I have not invented claim language or structure for them.
• This analysis is limited to the eight references cited on the face of US 5,665,069. There may be other §102/§103 art, but you asked specifically about the patent's own citations, so I did not expand the field search.
• Do not conflate US 5,665,069 with JP 5665069 B2 (Olympus/Yamanashi, an unrelated endoscopic tissue-freezing patent), consistent with the earlier sections.

Sources: Google Patents US5665069 (https://patents.google.com/patent/US5665069/en); USPTO image PDF (http://patentimages.storage.googleapis.com/2b/13/1d/03623ba7c7770d/US5665069.pdf); Justia (https://patents.justia.com/patent/5665069); and the individual reference pages cited inline above.

I'll research the cited prior art references to ground the obviousness analysis. Let me pull details on each.

Let me pull details on the remaining cited references and the closely-related "similar documents."

Obviousness Analysis — U.S. Patent No. 5,665,069 under 35 U.S.C. § 103

Building on the prior "Patent summary" and "Litigation summary" sections. I do not repeat the bibliographic record, the claim text, or the litigation negative here; I confine this section to the § 103 merits.

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1. Legal framework applied

This is a pre-AIA patent (filed 1996-07-19, issued 1997-09-09, expired), so § 103 is applied under the Graham v. John Deere factors as refined by KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007):

1. Determine the scope and content of the prior art;
2. Ascertain the differences between the prior art and the claims at issue;
3. Resolve the level of ordinary skill in the pertinent art;
4. Weigh secondary considerations.

Under KSR, a combination is obvious where the prior art elements perform their known functions and the combination yields nothing more than predictable results, or where there is a "design need or market pressure" or a "finite number of identified, predictable solutions." Critically, where the specification admits that the core technique was already practiced by hand, the mechanization of that technique with known structure is a paradigm § 103 case.

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2. Person of ordinary skill in the art (POSITA)

A POSITA here would be a designer of ophthalmic injection/ophthalmic surgical devices, or a clinician-engineer team, with roughly a bachelor's degree in mechanical or biomedical engineering plus 2–3 years of syringe/needle-device experience, or an anesthesiologist/ophthalmologist familiar with peribulbar block technique working with such an engineer. This level is low enough that the Luer-lock, needle-length, and flange geometries at issue were well within routine design skill.

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3. Scope and content of the prior art

All eight examiner-cited references pre-date the 1996-07-19 filing and therefore qualify as prior art under pre-AIA § 102(a)/(b). The most probative are summarized below (full text retrieved for the ones marked ✔; two are flagged as unverified).

Caveat on the "Similar Documents" and "Cited By" lists: several items in those lists — e.g., US 6,413,245 (1999 priority, Alcon "Sub-tenon drug delivery"), US 7,402,156 ("Counter pressure device for ophthalmic drug delivery," 2008), and the Halozyme hyaluronidase family — post-date the 1996 filing and are not § 102/§ 103 prior art for this patent. They appear in Google Patents' citation graph for reasons unrelated to this patent's priority. US 5,472,436 ("Ocular appliance for delivering medication," 1995), US 5,364,374 ("Microneedle for injection of ocular blood vessels," 1994), and EP 0 572 828 ("Ophthalmologic cannula," 1993) do pre-date the filing and would be citable, but they were not cited by the examiner and I did not retrieve their full text; I therefore treat them as potential additional art rather than as part of the core combination.

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4. Scope of the claims vs. the prior art — element mapping

As the earlier summary establishes, both claims are independent, both require a threaded flange-to-hub connector, and both require a 0.5–0.75 inch hollow needle. Mapping each element:

The only element with no clean single-reference hit is the functional limitation — the skin-contacting side "transmitting sufficient pressure … to prevent the deposit of anesthetic throughout tissue in said space." That is a result/function that the structure inherently produces when pressed; under § 103 it is not separately patentable over a flange that structurally presses the same tissue (In re Schreiber; In re Pearson). Notably, this function is the very thing the specification admits was already done by hand (see § 5).

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5. The specification's own admission (key to motivation)

The Background states:

"…the block success rate … may be improved by the judicious application of digital pressure to the lower lid at the injection site. This action prevents the anesthetic from spreading throughout the lower lid tissue, instead directing it rearward, into the peribulbar space…" (US5665069, Background)

The patent then states the problem is that doing this "with just two hands is to sacrifice the needle stability." So the stated inventive contribution is not the pressure technique (admitted prior art) but mechanizing it onto the syringe so one person can do it while stabilizing the needle. That admission collapses the § 103 gap to a mechanical-substitution problem, which KSR holds obvious where a known technique is automated/mechanized with known structure.

Independently, US 5,098,389 (BD) — a reference the examiner cited — teaches that peribulbar diffusion "must often be aided by external massage or … a Honan Balloon." That is a third-party admission that applying external pressure to aid peribulbar anesthetic spread was known. It supplies an express motivation, not just a hindsight one.

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6. Combinations rendering the claims obvious

Combination A (strongest) — BD ’389 + Reich ’643 + Schweblin ’248

• Primary: US 5,098,389 teaches ophthalmic (peribulbar) needle assemblies and the need for external pressure to aid diffusion.
• Secondary 1: US 5,009,643 teaches a flange with a skin-abutting disk/stop and a threaded connector to a mating component — i.e., the claimed structural flange-in-tunnel.
• Secondary 2: US 4,639,248 teaches the semi-circular transverse plate geometry of the flange.

Motivation. BD ’389 identifies exactly the problem the ’069 patent addresses (inadequate spread of peribulbar anesthetic requiring external pressure/massage/balloon). A POSITA seeking to avoid the "second pair of hands" problem (also expressly recognized in the ’069 Background) would look to the well-known practice of pressing a flat, tissue-contacting surface against the skin around an injection site — as in the trocar-sleeve flanges of ’643 / EP ’363 — and would mount such a flange on the ophthalmic needle hub using the standard threaded (Luer-lock) connection taught by ’643 and Lee ’128. The transverse semi-circular plate of Schweblin ’248 supplies the claimed shape. The combination performs only known functions (holding, pressing, sealing/connecting) and yields a predictable result — a structure that presses tissue while stabilizing the needle. This is precisely the "combination of familiar elements according to known methods … [yielding] predictable results" that KSR condemns.

Combination B — Lee ’128 + Reich ’643 + BD ’389

• Primary: US 4,664,128 (Lee) teaches a flange member (21/19) mounted on a syringe and expressly contemplates the Luer Lok® threaded hub connection.
• Secondary 1: US 5,009,643 supplies the flange-with-threaded-connector and tissue-abutting stop.
• Secondary 2: US 5,098,389 supplies the ophthalmic/peribulbar application and needle-length/gauge context.

Motivation. Lee already places a flange on a syringe for one-handed operation; combining it with a threaded hub connection (which Lee itself names) and applying the resulting assembly to the known peribulbar procedure (BD ’389) requires no more than ordinary creativity. The ½–¾ in. needle is a routine design choice in light of BD ’389's depth-control teaching.

Combination C — EP ’363 (Dexide) + BD ’389 + Schweblin ’248

• EP 0 432 363's stop member that abuts the exterior body surface to resist movement is functionally the claimed skin-contacting pressure surface; BD ’389 supplies the ophthalmic context and the diffusion problem; Schweblin supplies the semi-circular transverse plate. Same motivation as Combination A.

On the method claim (claim 2)

Claim 2 recites the same device plus "[injecting … while simultaneously applying pressure to the space between the inferior orbital ridge and lower eyelid … to prevent the deposit of anesthetic throughout tissue]." The injecting step is the ordinary peribulbar technique (BD ’389; Ritch ’837 in the glaucoma-treatment context), and the simultaneous pressure step is the admitted prior-art "digital pressure" technique and BD ’389's "external massage / Honan Balloon." A method claim whose only novel step is the mechanical automation of a known manual step using a known structure is obvious under KSR. There is no new physical result — the patent's own Examples report a quantitative improvement in an already-practiced technique, not a new effect.

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7. Anticipated counter-arguments and how they fare

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8. Conclusion on § 103

Both claims of US 5,665,069 are more likely than not obvious over the examiner-cited art, most persuasively as:

US 5,098,389 (BD) in view of US 5,009,643 (Reich) and US 4,639,248 (Schweblin), optionally further in view of US 4,664,128 (Lee) and EP 0 432 363 (Dexide).

The rationale is straightforward and does not depend on hindsight:

1. The problem was known and expressly documented — BD ’389 states peribulbar diffusion "must often be aided by external massage or … a Honan Balloon"; the ’069 specification admits the same digital-pressure technique.
2. Every structural element (flange pressing tissue, semi-circular plate transverse to the syringe axis, threaded flange-to-component connector, Luer-lock hub, short needle) is disclosed in the cited art and performs its known function.
3. The combination yields a predictable result — a hand-held ophthalmic syringe that presses tissue at the injection site while stabilizing the needle — squarely within KSR's "familiar elements … predictable results" doctrine.
4. The claims are narrower than the specification (threaded connector required; snap-fit/integral-molded embodiments unclaimed), which increases rather than decreases the § 103 exposure, because the claimed structure is the most conventional of the described variants.

The only potentially outcome-determinative challenge to this conclusion is the unexpected-results/Example evidence, and on the present record it is under-developed (no control, no statistics, and it is traceable to an admitted prior-art technique). Absent a stronger comparative showing, the claims would likely be held obvious.

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9. Sources and honest limitations

• Primary: Google Patents US5665069 — https://patents.google.com/patent/US5665069/en
• US 5,098,389 (Becton Dickinson) — https://patents.google.com/patent/[US5098389A](/patent/US5098389A) ; https://uspto.report/patent/grant/[5098389](/patent/5098389)
• US 5,009,643 (Reich / Richard Wolf) — https://patents.google.com/patent/[US5009643A](/patent/US5009643A) ; PDF https://patentimages.storage.googleapis.com/cb/06/25/ac44529a3668e4/US5009643.pdf
• EP 0 432 363 (Dexide) — https://patents.google.com/patent/EP0432363A3/en ; claims (FR) https://tr.espacenet.com/publicationDetails/claims?CC=EP&NR=0432363B1
• US 4,639,248 (Schweblin) — https://patents.google.com/patent/US4639248 ; PDF http://patentimages.storage.googleapis.com/dc/98/0a/e7ac999fd39b00/US4639248.pdf
• US 4,664,128 (Peter F. Lee, Inc.) — https://patentimages.storage.googleapis.com/5f/ea/62/3d0c6a439444a0/US4664128.pdf ; https://uspto.report/patent/grant/[4,664,128](/patent/4664128)

Limitations I am flagging rather than papering over:

1. I could not retrieve the full text of WO 93/005833 (Jesgamabe) or US 5,338,309 (BD); I treat them as secondary and do not rely on them for the rejection.
2. I did not retrieve US 5,092,837 (Ritch), US 5,472,436, US 5,364,374, or EP 0 572 828; the last three were not examiner-cited but pre-date the filing and could strengthen (or complicate) a § 103 position.
3. This analysis assumes pre-AIA § 103 (correct for a 1996 filing). The AIA § 102/103 regime does not apply.
4. Date inconsistency to flag: the header of this task states today's date as 2026-10-01, while the task body states "Current Date: April 26, 2026." This has no effect on the § 103 analysis, but the two are not identical, and the earlier "Litigation summary" section's references to "CAFC 2026 docket activity" should be read against whichever date is authoritative.