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Golden Rule Fasteners v. R.P. Lumber — Roof Flashing Patent Litigation | PatSnap
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Case ID1:20-cv-00692
FiledJan 2020
ClosedJan 2024
Patent Litigation

Golden Rule Fasteners v. R.P. Lumber: Pipe Flashing Patents Centralized to N.D. Ohio

Golden Rule Fasteners asserted two pipe flashing patents — US8464475 and US8141303 — against R.P. Lumber and co-defendants over the EMC Master Flash product. After four years in the Northern District of Illinois, the JPML transferred the case to the Northern District of Ohio for coordinated pretrial proceedings alongside two related actions.

Resolution time
1461days
1,461 days — four-year journey before MDL centralization order issued
Patents asserted
2
US8464475B2 and US8141303B2 — pipe flashing apparatus and method patents
Outcome
Case Transferred
Centralized to N.D. Ohio under 28 U.S.C. § 1407 for consolidated pretrial proceedings
Cost ruling
Not specified
No cost ruling recorded at transfer stage — costs remain open before transferee court
Published by PatSnap Insights Team · Verified by PatSnap Eureka Data
Case overview

Four-year Illinois action centralized in a three-way roof flashing MDL

Golden Rule Fasteners, Inc. filed suit against R.P. Lumber Co., Inc. in the Northern District of Illinois on January 30, 2020, asserting infringement of US8464475B2 and US8141303B2 — both titled ‘Pipe Flashing Apparatus and Method.’ The patents cover roof flashing designed to seal around pipes and other protrusions to prevent water ingress at seams and joints. The accused product central to all related actions is the Electrical Mast Connection (EMC) Master Flash, manufactured by Aztec Washer Company.

On January 30, 2024 — exactly four years after filing — the Judicial Panel on Multidistrict Litigation ordered the case transferred to the Northern District of Ohio under 28 U.S.C. § 1407. Two co-defendants, NeverLeak Company LP and Oatey Co., faced parallel actions in separate districts and jointly supported centralization. The Panel assigned the consolidated litigation to Judge Donald C. Nugent, finding near-complete overlap in the patents asserted and a common accused product across all three actions.

The four-year timeline before centralization is notable and suggests protracted preliminary skirmishing, complicated by active patent reexamination proceedings at the USPTO that ran concurrently. Golden Rule opposed transfer, arguing defendant-specific facts precluded centralization and that informal coordination was sufficient — arguments the Panel rejected. Whether the underlying infringement claims will ultimately be resolved on the merits, or through settlement in the consolidated proceeding, remains an open question from the public record.

Case at a glance
Case no.1:20-cv-00692
CourtIllinois Northern
JudgeJohn J. Tharp, Jr.
FiledJanuary 30, 2020
ClosedJanuary 30, 2024
Duration1461 days
OutcomeCase Transferred
Verdict causeInfringement Action
BasisCase Transferred
Prior Art Intelligence
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Case data sourced from PACER / Illinois Northern District Court via PatSnap Eureka Litigation Intelligence Explore similar cases ↗
Case timeline

Filing to resolution in 1461 days

1,461 days — four-year journey before MDL centralization order issued

Case timeline: Complaint filed May 13 2025, JAN–FEB — 1461 days total Horizontal timeline showing the three key events in Golden Rule Fasteners, Inc. v R.P. Lumber Co., Inc. from filing to voluntary dismissal. Source: PACER, Illinois Northern District Court. JAN 30 2020 Complaint filed JAN–FEB 2020 Pre-trial proceedings JAN 30 2024 Transferred venue changed 1461 DAYS TOTAL
Transfer terms

What the JPML centralization order means for Golden Rule v. R.P. Lumber

Legal mechanism

What is a § 1407 MDL transfer?

28 U.S.C. § 1407 allows the Judicial Panel on Multidistrict Litigation (JPML) to consolidate related federal actions pending in different districts into a single court for coordinated pretrial proceedings. Transfer does not resolve the case — it streamlines discovery, claim construction, and validity rulings. Once pretrial proceedings conclude, individual actions are remanded to their original districts for trial unless settled beforehand.

Procedural transfer — not a merits ruling
Venue change

Why the Northern District of Ohio was selected

The JPML selected N.D. Ohio because one of the three related actions was already pending there, defendants across all actions supported centralization there, and the district offered geographic convenience for the dispersed parties. Judge Donald C. Nugent was assigned as transferee judge. The Panel explicitly rejected Golden Rule’s preferred alternative venue — the Northern District of Mississippi — finding Ohio better served all parties.

N.D. Ohio — Judge Donald C. Nugent
What happens next

Consolidated pretrial proceedings in N.D. Ohio

All three related actions — including this Illinois case — now proceed together before Judge Nugent for claim construction, patent validity, and discovery. The Panel cited ongoing USPTO patent reexamination proceedings as a key reason informal coordination was inadequate. Overlapping claim construction rulings on US8464475 and US8141303 will now bind all defendants simultaneously, significantly increasing the stakes of each ruling for Golden Rule.

Centralized claim construction ahead
Patent reexamination

USPTO reexamination adds a parallel validity track

The JPML highlighted active patent reexamination proceedings before the USPTO as a factor weighing against informal coordination. Reexamination can narrow, cancel, or confirm patent claims independently of the district court litigation. Any claim amendments or cancellations during reexamination could materially affect the scope of infringement allegations across all three consolidated actions — making the USPTO proceedings a critical parallel track to monitor.

USPTO reexamination — claims at risk
Legal analysis based on PACER docket records for case 1:20-cv-00692 and PatSnap Eureka litigation intelligence Search PatSnap Eureka ↗
Parties and representation

Full party and counsel information

RoleNameTypeDetail
PlaintiffGolden Rule Fasteners, Inc.CompanyFastener and flashing IP licensor — holder of US8464475B2 and US8141303B2Search in Eureka ↗
DefendantR.P. Lumber Co., Inc.CompanyR.P. Lumber Co., Inc. — building materials distributor accused of selling EMC Master FlashSearch in Eureka ↗
Plaintiff counselJames F. McDonough , IIIAttorneyCounsel for Golden Rule Fasteners, Inc.Search in Eureka ↗
Plaintiff counselMark Richard MillerAttorneyCounsel for Golden Rule Fasteners, Inc.Search in Eureka ↗
Defendant counselMichael D. SchagAttorneyCounsel for R.P. Lumber Co., Inc.Search in Eureka ↗
Defendant counselMichael T. KokalAttorneyCounsel for R.P. Lumber Co., Inc.Search in Eureka ↗
Presiding judgeJudge John J. Tharp, Jr.Chief JudgeIllinois Northern District Court — Chief JudgeSearch in Eureka ↗
Official verdict

Stipulation of dismissal — official text

“Accused infringer The NeverLeak Company, LP (“NeverLeak”) moves under 28 U.S.C. § 1407 to centralize this patent litigation in the Northern District of Ohio. Accused infringers Oatey Co. and RP Lumber Co., Inc., join in NeverLeak’s motion. This litigation consists of three actions pending in three districts, as listed on Schedule A. Patentholder Golden Rule Fasteners, Inc. (“Golden Rule”) opposes centralization and, alternatively, requests the Northern District of Mississippi as the transferee district. On the basis of the papers filed and the hearing session held, we find that these actions involve common questions of fact, and that centralization in the Northern District of Ohio will serve the convenience of the parties and witnesses and promote the just and efficient conduct of this litigation. All actions share factual questions involving two related patents1 concerning roof flashing that fits around pipes and other protrusions to prevent water leakage from seams and joints. Additionally, they involve at least one common product – the Electrical Mast Connection (“EMC”) Master Flash manufactured by Aztec Washer Company. There is a near complete overlap in the patents asserted in these actions,2 and thus, overlapping claim construction and patent validity issues. The common factual questions include the design, development, and sales of the accused EMC Master Flash product, whether the EMC Master Flash and allegedly similar roof flashing products infringe the asserted patents, the evidence related to claim construction, as well as facts underlying patent validity matters such as the scope and content of the prior art and obviousness. Centralization will eliminate duplicative discovery, prevent inconsistent pretrial rulings (particularly with respect to claim construction and patent validity issues), and conserve the resources of the parties, their counsel and the judiciary. 1 The asserted patents are U.S. Patent No. 8,141,303 (the ’303 patent) and U.S. Patent No. 8,464,475 (the ’475 patent), each titled “Pipe Flashing Apparatus and Method.” 2 Common plaintiff Golden Rule alleges that defendants in all three actions have infringed the ’475 patent by selling the EMC Master Flash and that defendants in two actions (NeverLeak and RP Lumber) additionally have infringed the ’303 patent with respect to the same EMC Master Flash accused product. The ’303 patent also is at issue in the remaining action (Oatey), even though not currently the subject of a cause of action. See Oatey Am. Compl. ¶ 15 n.1 (N.D. Ohio Mar. 27, 2019) (“Golden Rule owns two other patents . . . [including] 8,141,303, with claims that are infringed” and plaintiff will “likely assert additional claims from those patents in this case”). Case ILN/1:20-cv-00692 Document 24 Filed 01/30/24 Page 1 of 3 FILED 1/30/2024 THOMAS G. BRUTON CLERK, U.S. DISTRICT COURT Case: 1:20-cv-00692 Document #: 43 Filed: 01/30/24 Page 1 of 3 PageID #:292 -2- In opposing centralization, the patentholder principally argues that (1) common questions of fact are lacking because each defendant’s infringement will depend on facts unique to each defendant’s conduct; and (2) informal coordination provides a practicable alternative to centralization. These arguments are unpersuasive. The same two patents are involved in each action, and the complaint asserts at least one common accused product. Thus, whether the common accused product – the EMC Master Flash – infringes the asserted patents is common to all actions. The involvement of defendant-specific issues is not an impediment to transfer where, as here, the actions share a common factual core. See In re Rembrandt Techs., LP, Patent Litig., 493 F. Supp. 2d 1367, 1369 (J.P.M.L. 2007) (“Transfer under Section 1407 does not require a complete identity or even a majority of common factual or legal issues as a prerequisite to transfer.”). We do not believe that informal coordination, as proposed by the patentholder, is an adequate alternative considering the history of this litigation and the patent reexamination proceedings before the U.S. Patent and Trademark Office. Claim construction proceedings currently are advancing without coordination among the parties. Nothing in the record indicates that the patentholder has attempted to informally coordinate the proceedings or responded to the other parties’ efforts to do so. Moreover, absent centralization, judges in three different districts will be called upon to become familiar with the asserted patents (including the related patent reexamination proceedings) and rule on substantially the same claim construction and patent validity defenses, which presents a significant risk of inconsistent rulings and unnecessary expenditure of judicial resources. Centralization offers substantial opportunity to streamline the pretrial proceedings in these overlapping patent actions and prevent inconsistent rulings. The Northern District of Ohio is an appropriate transferee district for this litigation. It provides a convenient and accessible location for the geographically dispersed actions and parties. One action is pending there, and defendants in all actions support centralization there. Judge Donald C. Nugent is an experienced transferee judge who has the ability and willingness to manage this litigation efficiently. We are confident he will steer this litigation on a prudent course. IT IS THEREFORE ORDERED that the actions listed on Schedule A and pending outside the Northern District of Ohio are transferred to the Northern District of Ohio and, with the consent of that court, assigned to the Honorable Donald C. Nugent for coordinated or consolidated pretrial proceedings.”
Source: PACER Docket, Case 1:20-cv-00692, Illinois Northern District Court · Filed January 30, 2024

The JPML order is procedural rather than substantive — it makes no finding on infringement or validity. The Panel’s ruling that ‘the involvement of defendant-specific issues is not an impediment to transfer’ signals that Golden Rule’s core legal arguments were insufficient to defeat centralization. Critically, the order notes claim construction proceedings were advancing without coordination, suggesting the Illinois case had reached a consequential pretrial stage before transfer. The merits remain entirely open.

PACER case 1:20-cv-00692 · Public docket record Explore in Eureka ↗
Patent at issue

US8464475B2 & US8141303B2 — Pipe Flashing Apparatus and Method

Publication No.US8464475B2
Application No.US13/723588
Patent details
AssigneeGolden Rule Fasteners, Inc.
ProductUS8464475B2 — pipe flashing apparatus and method (primary asserted patent)
Publication typeB2 — grant (with prior publication)
Cited in actionJanuary 30, 2020

Publication No.US8141303B2
Application No.US12/604933
Patent details
AssigneeGolden Rule Fasteners, Inc.
ProductUS8141303B2 — pipe flashing apparatus and method (second asserted patent)
Publication typeB2 — grant (with prior publication)
Cited in actionJanuary 30, 2020

US8464475B2 (application no. US13/723588) and US8141303B2 (application no. US12/604933) both bear the title ‘Pipe Flashing Apparatus and Method.’ The patents cover the design and installation methodology for roof flashing that seals around pipes, conduits, and other protrusions to prevent water infiltration at roof penetration points — a technically modest but commercially critical component in residential and commercial roofing. The ‘303 patent predates the ‘475 patent based on application numbers, suggesting a continuation or improvement relationship between the two.

In the roofing and building products sector, pipe flashing patents occupy a commercially significant niche: millions of units are sold annually through large distribution networks, making even a single infringing SKU potentially high-volume. The assertion against the EMC Master Flash — a product sold through multiple distributor channels including R.P. Lumber and NeverLeak — illustrates how a single patent family can generate simultaneous multi-defendant litigation. Active USPTO reexamination proceedings further suggest the patents have faced prior art challenges, and the outcome of those proceedings will be pivotal for any freedom-to-operate analysis.

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Freedom to operate

Should your team run an FTO against US8464475 and US8141303?

Any company manufacturing, importing, distributing, or reselling roof pipe flashing products — particularly those fitting around electrical masts, conduits, or similar penetrations — should treat US8464475B2 and US8141303B2 as active enforcement risks. Golden Rule has demonstrated willingness to pursue simultaneous multi-defendant litigation across multiple US districts, and the consolidation order means a single adverse ruling will affect all defendants at once. Building products distributors with broad SKU portfolios are particularly exposed.

PatSnap Eureka’s FTO Search Agent can map the claim scope of both patents against your product specifications, identify prior art surfaced during USPTO reexamination, and flag continuation or divisional applications in the same family that may extend Golden Rule’s enforcement window. Setting up claim monitoring on US8464475 and US8141303 ensures your team receives immediate alerts if reexamination amends or cancels any claims — directly affecting your litigation exposure and design-around options.

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Related litigation

Related pipe flashing and roofing component patent cases

PatSnap Eureka tracks related litigation across truck body equipment, vehicle accessories, and comparable infringement actions in the Georgia district system.

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Strategic implications

What this case signals for the building products IP landscape

This MDL consolidation reflects the growing complexity of multi-defendant patent enforcement in the construction materials sector.

Multi-defendant patent enforcement routinely triggers MDL centralization

When a patentee sues multiple defendants in different districts over the same product, § 1407 consolidation is a predictable outcome. For IP teams at building materials companies, this means a single infringement action can rapidly become a multi-party proceeding with shared claim construction stakes — dramatically increasing litigation risk and cost exposure for every named defendant.

Concurrent USPTO reexamination creates a two-front validity battle

The JPML’s explicit reference to ongoing reexamination proceedings signals that patent validity is actively contested before the USPTO. Competitors and licensees monitoring US8464475 and US8141303 should track reexamination outcomes closely — amended or cancelled claims could extinguish or substantially narrow Golden Rule’s enforcement position across all pending actions simultaneously.

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Includes sector IP trends, Judge Treadwell’s case history, and FTO risk assessment for the truck equipment space
N.D. Ohio venue statisticsAztec Washer supply chain riskReexamination claim status
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Frequently asked questions

Golden v R.P. — key questions answered

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