Anthony, Inc. v. ControlTec, LLC

Case Overview & Background

The parties and the technology. This matter is technically not district court litigation but an inter partes review at the Patent Trial and Appeal Board — Anthony, Inc. v. ControlTec, LLC, IPR2025-00559 — that arose directly out of a patent infringement suit. Anthony, Inc. is the petitioner and an operating company: a long-time manufacturer of glass doors, frames, and related components for commercial refrigerated display cases, headquartered in Syracuse, NY, and a subsidiary of Dover Corporation; Anthony identifies itself, Dover, and Hillphoenix, Inc. (Dover's commercial-refrigeration/display-case unit, also a defendant below) as real parties-in-interest (Institution Decision, IPR2025-00559, citing Pet. 87; see also Rule 7.1 disclosure in D. Del. listing Dover Corp. and The Vanguard Group as corporate parents). ControlTec, LLC is the patent owner, a Delaware LLC that identifies itself as the sole real party-in-interest. Public sources do not clearly establish whether ControlTec is an operating company or a patent-assertion vehicle — one automated case summary labels it an "operating company," but I could not verify any actual business operations, so its NPE/PAE status should be treated as unconfirmed. ControlTec sued Anthony and Hill Phoenix in ControlTec, LLC v. Anthony, Inc., et al., No. 1:24-cv-00883 (D. Del., filed July 26, 2024), before Judge Jennifer L. Hall, asserting U.S. Patent Nos. 7,207,181 B2 and 7,421,847 B2 (Justia/UniCourt docket entries 1, 3, 11, 12).

The asserted patent and accused products. U.S. Patent 7,207,181 B2, titled "Refrigeration Unit Condensation Prevention" (filed Mar. 1, 2005; issued Apr. 24, 2007), covers frame- and door-heating systems that prevent condensation ("sweating") on refrigerated display cases by sensing frame temperature, ambient air temperature, and relative humidity, anticipating the dew point, and activating/deactivating the anti-sweat heater before condensation forms (Institution Decision, IPR2025-00559, §D; complaint ¶¶29–31). The related '847 patent is a divisional of the same application and is challenged in the parallel IPR2025-00636. ControlTec's complaint accuses Anthony's "Energy Controller" anti-sweat control units (e.g., part no. 60-22715-0002), which are standard equipment on Anthony's 101, 401, Infinity, and Vista C series commercial refrigeration doors, of infringing method claim 8 and system claim 14 (among others) of the '181 patent (Compl. ¶¶23–31, 53, as summarized in the D. Del. complaint analysis). The complaint ties defendants' adoption of this design to the Department of Energy's 2017 efficiency rulemaking, which pushed the industry toward energy-saving anti-sweat controls.

Procedural posture and why it matters. Anthony petitioned for IPR on January 30, 2025, challenging all claims 1–20 on all grounds. ControlTec sought discretionary denial, arguing both patents would expire (July 8, 2025) before the institution decision was due — a bid to moot the proceeding. Acting Director Coke Morgan Stewart denied discretionary denial and referred the petitions to the Board (Paper 12, PTAB July 16, 2025; parallel decision in IPR2025-00636 at Paper 9), holding that Anthony had made a persuasive showing of material error by the Office under 35 U.S.C. § 325(d): following a restriction requirement, the examiner allowed both the parent and divisional on first office action while overlooking the prior-art "Carter" reference (Ex. 1004), which discloses a freezer/refrigeration system with surface-temperature, ambient-temperature, and humidity sensing tied to a calculated dew point for automatic supplemental-heat control. The Board then instituted review of all challenged claims and all grounds on August 25, 2025 (Unified Patents PTAB case list; institution decision by a panel including APJs Barry L. Daniels and Sean P. O'Hanlon and a third panelist, per the OCR'd decision). The D. Del. case remains the related parallel proceeding, making the IPR's estoppel and invalidity outcomes directly relevant to the litigation before Judge Hall in a leading patent venue.

Why the case is notable. This is a significant post-Vidal-Memo-rescission discretionary-denial ruling: the Acting Director made clear that a patent's age — even its expiration before the institution deadline — is not an automatic bar to IPR institution where the petitioner shows the examiner materially erred, because the public interest in correcting examination error justifies spending Office resources. It is also an aggressive defense play by an operating company against a late-lifecycle assertion: Anthony (backed by Dover/Hillphoenix) filed twin IPRs against both the '181 patent and its divisional '847 patent, and won institution on every claim and every ground despite the portfolio expiring mid-proceeding. For the commercial-refrigeration industry — where DOE efficiency rules made dew-point-driven anti-sweat controllers a standard feature — the case tests whether the foundational patents on that control logic should have issued at all in light of Carter. A final written decision on the merits is pending, and any finding of unpatentability will sharply constrain ControlTec's damages and injunctive leverage in the Delaware litigation, including potentially precluding recovery for post-expiration conduct. (Note: I could not verify the current status of the D. Del. case — some docket summaries show it "closed," others "open" — and the panel's third judge's name is uncertain from the OCR'd exhibit; both should be confirmed against PACER/PTAB dockets.)

Key Legal Developments — ControlTec, LLC v. Anthony, Inc. et al., No. 1:24-cv-00883-JLH (D. Del.)

Important framing note. The case in your metadata (IPR2025-00559) is the PTAB proceeding, not the infringement suit. The parallel infringement litigation is ControlTec, LLC v. Anthony, Inc. et al., No. 1:24-cv-00883-JLH (D. Del.), which asserts both U.S. Patent Nos. 7,207,181 B2 (the IPR patent) and 7,421,847 B2 (the subject of the related IPR2025-00636). I've reconstructed the chronology below from the docket snapshots and PTAB records available; the district court docket could only be retrieved to roughly August–September 2024, so later events (Markman, discovery, trial, disposition) could not be verified and are flagged as such.

1. Filing & Initial Pleadings (2024)

• 2024-07-26 — Complaint filed. ControlTec, LLC sued Anthony, Inc. and Hill Phoenix, Inc. in the District of Delaware for patent infringement of the '181 and '847 patents, with a jury demand. The accused products are Anthony's "Energy Controllers" (e.g., part no. 60-22715-0002) used in the 101, 401, Infinity, and Vista C series commercial refrigeration doors (Compl. ¶¶23–31). The complaint asserts, inter alia, independent claim 14 of the '181 patent and claim 8 of the '847 patent; the '181 claim 14 "control means" element presents a § 112(f) construction issue. (D.I. 1; UniCourt case page; Ex Parte "Complaint analysis" for 1:24-cv-00883.)
• 2024-07-26/29 — Summons issued and executed on both defendants (answer due 2024-08-19). (D.I. 5–7.)
• 2024-07-31 — Case assigned to Judge Jennifer L. Hall (D. Del.). (D.I. docket entry.)
• 2024-08-02/05 — Pro hac vice admissions for ControlTec's Haynes and Boone counsel (Robert Ziemian, Stephanie Sivinski, Ian Rainey, Charles Jones II; local counsel Brian Egan). (D.I. 8–9.)
• 2024-08-16/19 — Answer deadline extended to 2024-10-03 by stipulation, so ordered by Judge Hall. Defendants filed Rule 7.1 disclosures identifying Dover Corporation and The Vanguard Group as corporate parents (Dover owns Anthony and Hill Phoenix). (D.I. 10–12.)
• The docket snapshot ends before the answer; the answer, affirmative defenses, and any counterclaims are not in the retrieved record (last docket update ~2024-09-24 per UniCourt; case status "Open").

2. Pre-Trial Motions of Substance

• No motions to dismiss, transfer, or for summary judgment were found in the accessible docket record (which runs only through ~August/September 2024). The case was in its pleading stage at last retrieval.
• No motion to stay pending IPR was found in the retrieved record. Given that the IPR petitions were filed 2025-01-30 and the case remained open, a stay motion is plausible but unverified — I could not locate one in the sources available.

3. Claim Construction (Markman)

• No Markman proceedings or claim construction rulings were found. The case was filed in July 2024 and, per the last retrievable docket update, had not progressed past pleadings. Given the parties' dispute over the "control means" limitation (per the complaint analysis), claim construction would be significant if reached — but no such order was located, and I will not speculate.

4. Discovery Milestones

• None identified in the available record. No discovery motions, protective orders, or substantive discovery events appear in the retrieved docket. The patent expiration date (see § 7) would cap any damages period at pre-expiration conduct.

5. Trial, Verdict, Post-Trial Motions

• No trial, verdict, or post-trial activity (JMOL, new trial, fees) has occurred per the available sources. The case was still in its early stages as of the last docket update (2024-09-24).

6. Settlement, Dismissal, Judgment, Appeal — Present Posture

• The district court case is open and pending as of the most recent retrievable status (UniCourt update 2024-09-24). No settlement, dismissal, judgment, or appeal was found. The litigation is active in the sense that no disposition has been docketed in the sources reviewed; however, I could not access the full 2025–2026 docket, so a recent resolution cannot be ruled out.

7. Parallel PTAB IPR Proceedings and Their Effect on the Litigation

• IPR2025-00559 (the '181 patent): Anthony, Inc. filed the petition on 2025-01-30, identifying itself, Dover Corporation, and Hillphoenix, Inc. as real parties-in-interest — the same Dover-related entities as defendants in the Delaware case. ControlTec is Patent Owner. (Unified Patents PTAB portal; PTAB Institution Decision.)
• IPR2025-00636 (the '847 patent, a division of the '181): Anthony filed a parallel petition; the two IPRs were briefed and decided together on the discretionary-denial question. (PTAB Director's Decision; Finnegan blog.)
• 2025-07-16 — Acting Director declined discretionary denial. ControlTec filed a request for discretionary denial (arguing both patents would expire by ~2025-07-08, before the institution decision), Anthony opposed, and ControlTec replied. Acting Director Coke Morgan Stewart referred the petitions to the Board, finding that Anthony had shown a "material error by the Office" during prosecution — the examiner allegedly overlooked the prior art reference "Carter" after a restriction requirement, and both patents were allowed as first-action allowances. The Acting Director held that patent age/expiration is not an automatic bar where a material examination error is shown. (Acting Director's Decision, IPR2025-00559/00636, Paper 9-type decision dated 2025-07-16; Finnegan, "Material Error by the Office Results in Referral Despite Patent Expiration," 2025-08-11; Mondaq, 2025-08-12.)
• 2025-08-25 — Institution granted. The Board (APJs Daniels, Grossman, O'Hanlon) instituted IPR2025-00559 on all challenged claims 1–20 and all grounds after finding a reasonable likelihood of unpatentability. (PTAB Institution Decision; Unified Patents portal: Inst. date 2025-08-25, status "Pending – Instituted.") The decision expressly notes the related Delaware case, 1:24-cv-00883, and the parallel IPR2025-00636.
• Effect on the litigation: The patents expired during the IPR pendency (~July 2025, per Patent Owner's request; the '181 patent issued 2007-04-24 and the '847 is its division). Consequently, even if ControlTec prevails in Delaware, relief is capped at pre-expiration damages — no injunction is available for expired patents. The instituted IPR (final written decision due ~August 2026, i.e., roughly now) could result in cancellation of all challenged claims, which would preclude or moot the infringement claims in the Delaware case under issue preclusion (for claims that were the same as in the IPR). The Delaware court's scheduling — including any stay — would typically be coordinated with the IPR, but no stay order was found in the retrieved materials.

Key Caveats

• The district court docket retrieved (via Justia/UniCourt) stops at 2024-08-19 / 2024-09-24; the answer, any counterclaims, and all substantive motion practice after that date are not verified.
• The IPR is still pending (instituted) as of today (2026-08-26); no final written decision appears in the search results.
• No Law360/Reuters/Patently-O coverage of the Delaware case surfaced in the searches available to me.

Bottom line: The infringement litigation (D. Del. 1:24-cv-00883) is an early-stage, open case asserting two expired-term refrigeration condensation-control patents; the decisive action to date has occurred at the PTAB, where the Acting Director rejected discretionary denial and the Board instituted IPR2025-00559 on all claims (2025-08-25), with the parallel IPR2025-00636 on the related patent — outcomes that will materially shape (and could end) the Delaware suit.

Important threshold point on "plaintiff" vs. "petitioner"

The case in your metadata — IPR2025-00559, Anthony, Inc. v. ControlTec, LLC — is a PTAB inter partes review, not an infringement case. In that proceeding Anthony, Inc. is the Petitioner and ControlTec, LLC is the Patent Owner. The underlying patent infringement case is a parallel district court action:

ControlTec, LLC v. Anthony, Inc. et al., No. 1:24-cv-00883-JLH (D. Del.), filed July 26, 2024, before Judge Jennifer L. Hall, asserting U.S. Patent Nos. 7,207,181 and 7,421,847. There, ControlTec, LLC is the plaintiff and Anthony, Inc. and Hill Phoenix, Inc. are the defendants. (Justia docket; UniCourt case summary; IPR Institution Decision, IPR2025-00559, Paper 12, §I.C, identifying the D. Del. case as the related matter.)

Counsel of record for the plaintiff (ControlTec, LLC) in the D. Del. infringement case

Per the docket (D.I. 6, 7, 8, 9; PHV order of 8/5/2024), ControlTec's counsel of record are:

Note on Theodore M. Foster (Haynes and Boone, LLP): Foster is listed as patent-owner counsel in the IPR (Director's Decision, Paper 9), but he was not among the four H&B attorneys admitted pro hac vice in the D. Del. case per the docket entries retrieved (D.I. 8–9), so I cannot confirm he is counsel of record in the infringement case.

Context: counsel in the IPR (your metadata case)

For completeness, the PTAB papers show:

• Petitioner Anthony, Inc.: Kenneth W. Darby Jr. and Kenneth Hoover, Fish & Richardson P.C. (Acting Director's Decision referring petitions, IPR2025-00559/00636, Paper 9; institution was granted on all challenged claims and grounds — IPR2025-00559, Paper 12).
• Patent Owner ControlTec, LLC: Robert P. Ziemian, Ian Rainey, and Theodore M. Foster, Haynes and Boone, LLP (same Decision).

Caveats

• I did not independently verify the specific office locations for each H&B/Fish & Richardson attorney; the firm affiliations are as stated in the PTAB and D. Del. filings. Haynes and Boone's IP litigation hub is Dallas, TX, and Fish & Richardson's Texas offices (Dallas/Houston) are where Darby and Hoover practice, but I lacked a retrieved source confirming each individual's office.
• The D. Del. docket retrievals I used (Justia/UniCourt) were current only through roughly September 2024; later appearances (e.g., additional H&B or Delaware counsel entering after the initial PHV order) may exist on PACER that I could not confirm. No sealed filings or non-appearance issues were identified for the plaintiff side.

Key procedural clarification

IPR2025-00559 is an inter partes review at the PTAB, not a district court infringement case. The parties are styled Petitioner (Anthony, Inc.) and Patent Owner (ControlTec, LLC). Under this matter's case metadata, ControlTec, LLC is treated as the responding/"defendant" party. The parallel district-court infringement suit is ControlTec, LLC v. Anthony, Inc., No. 1:24-cv-00883 (D. Del.) (filed July 26, 2024; Judge Jennifer L. Hall), where the roles are reversed—ControlTec is the plaintiff and Anthony is the defendant. Both are addressed below.

Counsel of record for ControlTec, LLC (Patent Owner / "defendant" per metadata)

Per the service list on the Acting Director's Decision referring the petitions to the Board (Paper 12, IPR2025-00559, dated July 16, 2025), ControlTec is represented by:

Source: Service list appended to the Acting Director's Decision (Paper 12), reproduced in the publicly available copy at finnegan.com (the same caption covers IPR2025-00559 and IPR2025-00636) and the DocketAlarm copy of the decision.

Caveat on lead/backup designation: The IPR "mandatory notices" (Paper 4, which also states ControlTec is the sole real party-in-interest) and the power of attorney would formally designate lead vs. backup counsel; I could not retrieve Paper 4 itself, so I cannot definitively state which of the three is designated "lead counsel" in the PTAB filing. All three appear on the official service list for patent owner.

District-court context (same dispute, different caption)

If the question is really aimed at the underlying infringement suit (1:24-cv-00883, D. Del.):

• Plaintiff ControlTec, LLC's counsel of record (per Justia/UniCourt docket): Robert P. Ziemian, Ian Rainey, Stephanie Sivinski, Charles M. Jones II (all pro hac vice, added Aug. 5, 2024), and Delaware-based Brian P. Egan.
• Defendant Anthony, Inc.'s counsel of record: Susan E. Morrison (per UniCourt's attorney listing). I could not verify her firm affiliation from the sources retrieved, so that detail is unconfirmed.

Counsel for the Petitioner (Anthony, Inc.) — for completeness

The petitioner's side is Fish & Richardson P.C. — Kenneth W. Darby Jr. and Kenneth Hoover (kdarby@fr.com, hoover@fr.com) per the Paper 12 service list. Real parties-in-interest include Dover Corporation and Hillphoenix, Inc.

Status notes

• The IPR was instituted on all challenged claims (1–20) and all grounds on August 25, 2025 (Unified Patents PTAB portal; institution decision before APJs Daniels, Grossman, and O'Hanlon). The patents at issue expired in July 2025, but the Acting Director declined discretionary denial due to a showing of material examiner error (Paper 12).
• No filings appear sealed; the Paper 12 service list is public. I found no indication that ControlTec has separate local counsel in the IPR (PTAB practice does not require local counsel).

Unverified item: The Unified Patents case-list snippet also references a "Brent W. Murray" in connection with ControlTec/this matter, but I could not confirm his role (petitioner-side or patent-owner-side) from any primary document, so I have not included him as counsel of record.