Untitled case

This is a patent infringement lawsuit filed in the United States District Court for the Northern District of Texas, Dallas Division, under case number 3:26-cv-01006. The plaintiff, Prosperina Ventures LLC, has accused Service Lighting and Electrical Supplies, d/b/a 1000BULBS.COM, of infringing patent 9222659.

Prosperina Ventures LLC is a plaintiff in patent infringement litigation, suggesting it may operate as a non-practicing entity (NPE) or patent assertion entity (PAE). Service Lighting and Electrical Supplies, doing business as 1000BULBS.COM, is an operating company that sells lighting products. The specific accused product or technology is related to cooling structures and potentially an emergency power circuit operating as a "passive resonant converter" based on an analysis of a related complaint. The asserted patent, US 9,222,659, titled "Physical vapor deposition system," describes a steered arc physical vapor deposition (PVD) assembly. This system includes a vacuum chamber, a post cathode, a magnet within the cathode, and a power source that delivers opposite charges to the cathode and an anode, controlling the arc's location on the cathode's surface by manipulating magnetic fields.

The case is being heard in the Northern District of Texas, Dallas Division. The Northern District of Texas, like other Texas districts, has experienced an increase in patent litigation filings, partly due to the Supreme Court's TC Heartland decision, which limited venue options for patent cases. While the Western District of Texas has seen a more significant surge in patent cases due to the presence of Judge Alan D. Albright, the Northern District also handles a substantial number of patent disputes. The court's local patent rules emphasize mandatory disclosures in discovery, impacting motion practice in the Dallas Division. The specific judge assigned to this case is not readily available in the provided search results. The notability of this specific case beyond it being a patent infringement suit in a busy patent litigation venue is not immediately apparent from the available information.

Key Legal Developments and Outcome for Prosperina Ventures LLC v. Service Lighting and Electrical Supplies Inc.

Case Caption: Prosperina Ventures LLC v. Service Lighting and Electrical Supplies Inc. d/b/a 1000Bulbs.com
Case Number: 3:26-cv-01006
Court: U.S. District Court for the Northern District of Texas, Dallas Division
Status: Active
Patents at issue: U.S. Patent No. 9,222,659

This patent infringement litigation, filed in the Northern District of Texas, is in its very early stages, having been initiated in 2026. As of August 6, 2026, no significant substantive legal developments beyond the initial complaint filing have been publicly reported.

Chronological Summary of Legal Developments:

• Filing & Initial Pleadings:

  • Complaint for Patent Infringement: Plaintiff Prosperina Ventures LLC filed a complaint against Service Lighting and Electrical Supplies Inc., doing business as 1000Bulbs.com, in the U.S. District Court for the Northern District of Texas, Dallas Division, under case number 3:26-cv-01006. The complaint asserts infringement of U.S. Patent No. 9,222,659, titled "LED lamp". The exact filing date in 2026 is not available in the provided snippets, but the case number indicates a filing year of 2026. The defendant is alleged to have committed acts of patent infringement within the Northern District of Texas. The complaint includes a jury trial demand.
  • No information regarding the defendant's answer or any counterclaims has been publicly reported as of the current date.

• Pre-trial Motions of Substance:

  • Given the recent filing of the case in 2026, there is no public record of substantive pre-trial motions such as motions to dismiss, transfer, or stay pending IPR having been filed or resolved.

• Claim Construction (Markman) Outcomes:

  • Due to the early stage of the litigation, the case has not yet reached the claim construction (Markman) phase.

• Discovery Milestones:

  • Significant discovery milestones are unlikely to have been reached given the recent commencement of the lawsuit.

• Trial Events, Verdict, and Post-Trial Motions:

  • No trial events, verdicts, or post-trial motions have occurred.

• Settlement, Dismissal, Judgment, or Appeal:

  • The case remains active in the Northern District of Texas. There has been no reported settlement, dismissal, judgment, or appeal.

• Parallel PTAB IPR/PGR Proceedings:

  • A search of public records, including the USPTO's Patent Trial and Appeal Case Tracking System (P-TACTS), does not indicate any active or terminated Inter Partes Review (IPR) or Post-Grant Review (PGR) proceedings specifically targeting U.S. Patent No. 9,222,659.

In the patent infringement case 3:26-cv-01006, Prosperina Ventures LLC is represented by counsel from Katz PLLC and Kent & Risley LLC. The case was filed on March 30, 2026, in the Northern District of Texas.

As of August 6, 2026, the specific attorneys of record have been identified as follows:

Katz PLLC

• Firm: Katz PLLC
• Office Location: While a specific office location for attorneys on this case isn't specified in the immediate search results, Katz PLLC has a presence in Texas and is known for its patent litigation practice.
• Attorneys and Roles: Specific attorneys from Katz PLLC for this case were not detailed in the provided search snippets, but the firm is listed as plaintiff's counsel.

Kent & Risley LLC

• Firm: Kent & Risley LLC
• Office Location: Similar to Katz PLLC, specific office locations for attorneys on this case from Kent & Risley LLC are not explicitly mentioned in the provided search results.
• Attorneys and Roles: Specific attorneys from Kent & Risley LLC for this case were not detailed in the provided search snippets, but the firm is listed as plaintiff's counsel.

Further details on individual attorney roles (e.g., lead counsel, local counsel), office locations, and specific patent litigation experience or notable past cases would require access to the full docket entries or firm websites, which are not detailed in the current search results.

The search results indicate that Prosperina Ventures LLC has filed a patent infringement lawsuit against Service Lighting and Electrical Supplies, d/b/a 1000BULBS.COM, in the Northern District of Texas (Case No. 3:26-cv-01006). However, identifying the specific counsel of record for the defendant in this particular active case is challenging with the provided information.

Several search results mention Service Lighting and Electrical Supplies, Inc. d/b/a 1000bulbs.com as a defendant in other patent infringement cases, providing insights into their past legal representation:

• In Lexington Luminance LLC v. Service Lighting and Electrical Supplies, Inc. d/b/a 1000bulbs.com, 3-18-cv-01074 (TXND October 9, 2018), 1000bulbs.com requested a dismissal for failure to meet pleading standards. The opinion from the Northern District of Texas in this case suggests that 1000bulbs.com was actively defending itself in patent litigation.
• Another case involving Service Lighting and Electrical Supplies, Inc., et al., C.A. No. 15-53-RGA (D. Del. May 18, 2016), in the District of Delaware, saw Judge Andrews imposing restrictions on the plaintiff's in-house counsel. Richards, Layton & Finger is mentioned as having an active intellectual property litigation practice in Delaware and experience representing both plaintiffs and defendants in large-scale patent and trademark infringement matters. While this firm has IP litigation experience for defendants, there's no direct indication they represent 1000BULBS.COM in the current 3:26-cv-01006 case.

The complaint for the current case, 3:26-cv-01006, names "Katz PLLC; Kent & Risley LLC" as counsel for the plaintiff, Prosperina Ventures LLC. However, the defendant's counsel is not explicitly listed in the provided snippets for this specific case. It is possible that counsel has not yet made an appearance, or the information is not readily available through these search results.

Therefore, as of 2026-08-06, the specific counsel of record representing the defendant(s), Service Lighting and Electrical Supplies, d/b/a 1000BULBS.COM, in case 3:26-cv-01006 cannot be definitively identified from the provided search results.