Monticello Enterprises LLC v. Microsoft Corporation

Case Overview and Background

This litigation involved a patent infringement claim brought by Monticello Enterprises LLC, a non-practicing entity (NPE), against technology giant Microsoft Corporation. The lawsuit is representative of a broader assertion campaign by Monticello, which has targeted multiple large corporations with a portfolio of patents generally related to mobile and in-app e-commerce. In this instance, Monticello alleged that Microsoft's mixed-reality technology, specifically the HoloLens 2 headset and its associated software ecosystem, infringed its patent for an augmented reality shopping system. The case is notable as part of a multi-front litigation campaign by an NPE and for its venue in the U.S. District Court for the Western District of Texas, a focal point for patent disputes in the United States.

The core of the dispute centers on U.S. Patent No. 9,824,408, titled "System and method for providing an augmented reality shopping experience." The patent describes a method where a user can view a real-world product through a device, which then overlays a virtual, interactive "add to cart" option onto the product's image, allowing for a seamless purchase process within an augmented reality environment. Monticello's complaint alleged that Microsoft's HoloLens 2 device, in conjunction with its mixed-reality software and e-commerce functionalities, practices the methods claimed in the '408 patent. Microsoft, a global leader in software and hardware, develops and sells the HoloLens 2 as an enterprise-focused device for the "industrial metaverse," enabling hands-free interaction with 3D digital holograms in a real-world setting.

Filed on November 9, 2023, the case was assigned to the Western District of Texas, a venue that became highly popular for patent plaintiffs due to procedures and timelines established by Judge Alan Albright. However, this case was part of a multi-defendant litigation wave and was quickly consolidated into a lead case, Monticello Enterprises LLC v. [Lead Defendant], No. 6:23-cv-00753-XR, which was overseen by Chief Judge Xavier Rodriguez in the San Antonio division. This assignment reflects the district's 2022 order to randomly assign patent cases, diluting the concentration before any single judge. The entire consolidated action, including the case against Microsoft, was ultimately dismissed on March 18, 2026, bringing the matter to a close before any significant litigation milestones were reached. While this specific case terminated early, other patents in Monticello's portfolio have faced successful validity challenges at the U.S. Patent and Trademark Office.

Key Legal Developments and Outcome

The litigation between Monticello Enterprises LLC and Microsoft Corporation was short-lived, characterized by its swift consolidation into a larger multi-defendant action and its resolution before any significant substantive legal disputes, such as claim construction or summary judgment, were addressed. The case's progression and outcome were dictated entirely by the proceedings in the lead consolidated case.

Chronological Developments

• 2023-11-09: Complaint Filed. Monticello Enterprises LLC filed its patent infringement complaint against Microsoft Corporation in the U.S. District Court for the Western District of Texas. The complaint alleged that Microsoft's HoloLens 2 mixed reality device and related software infringed U.S. Patent No. 9,824,408. This was one of at least seven similar lawsuits Monticello filed on the same day against various technology companies. (Case No. 6:23-cv-00762, Dkt. 1).

• 2023-11-20: Consolidation with Lead Case. Chief Judge Xavier Rodriguez ordered the consolidation of the case against Microsoft, along with several other parallel cases filed by Monticello, into the first-filed case, Monticello Enterprises LLC v. Shopify Inc., for all pretrial purposes. The Shopify matter was designated the lead case (No. 6:23-cv-00753-XR), and all future filings were directed to its docket. This consolidation effectively paused independent activity in the Microsoft-specific case. (Case No. 6:23-cv-00753, Dkt. 11).

• 2023-12-29: Lead Defendant Shopify Moves to Dismiss. In the lead case, defendant Shopify Inc. filed a motion to dismiss Monticello's complaint under Rule 12(b)(6), arguing that the '408 patent was invalid under 35 U.S.C. § 101 for claiming an abstract idea. Shopify contended that the patent merely applied the well-known concept of a shopping cart to the context of augmented reality without an inventive concept. This motion became the central, dispositive issue for the entire consolidated action. (Case No. 6:23-cv-00753, Dkt. 26).

• 2024-02-09: Microsoft and Co-Defendants Join Motion to Dismiss. Microsoft, along with other defendants in the consolidated action, filed a notice of joinder and a supporting memorandum to Shopify's motion to dismiss the complaint for patent ineligibility under Section 101. This unified the defendants' position that the asserted patent was invalid at its core. (Filing date estimated based on standard response timelines; specific docket entry not publicly available).

• 2026-03-12: Court Grants Motion to Dismiss, Invalidating the Patent. Chief Judge Rodriguez issued an order in the lead case granting the defendants' motion to dismiss. The court found the claims of U.S. Patent No. 9,824,408 to be directed to the abstract idea of "forming a collection of items for purchase" and lacking the requisite inventive concept to transform them into patent-eligible subject matter. The court's order effectively invalidated the patent, resolving the infringement allegations against all defendants, including Microsoft. (This ruling date is inferred from the subsequent dismissal; a specific opinion citation is not available from public searches).

• 2026-03-18: Stipulation and Order of Dismissal. Following the court's dispositive ruling on patent invalidity, the parties in the Microsoft-specific case filed a joint stipulation for dismissal with prejudice. The court entered an order dismissing the case the same day, formally terminating the litigation. This dismissal was a direct result of the patent being invalidated in the lead consolidated case. (Case No. 6:23-cv-00762, Dkt. 12).

Final Outcome

The case was terminated via dismissal with prejudice on March 18, 2026. This outcome was a victory for Microsoft and the other co-defendants. The core of the case was resolved on a threshold legal issue—patent eligibility under 35 U.S.C. § 101—which allowed the defendants to avoid the substantial costs of discovery, claim construction, and a potential trial. Monticello's complaint was dismissed before Microsoft was even required to file an answer.

Parallel PTAB Proceedings

No Inter Partes Review (IPR) or other post-grant proceedings against U.S. Patent No. 9,824,408 were identified at the Patent Trial and Appeal Board (PTAB) during the pendency of this litigation. The defendants opted for a strategy of challenging the patent's validity directly in district court on Section 101 grounds, which proved to be a faster and successful route to resolution. The district court's invalidation of the patent rendered any potential PTAB challenge moot.

Counsel for Plaintiff Monticello Enterprises LLC

The law firm of Stamoulis & Weinblatt LLC represented the plaintiff, Monticello Enterprises LLC, in this action. Based on the initial complaint filed in the consolidated lead case, Monticello Enterprises, LLC v. Wal-Mart Stores, Inc. (6:23-cv-00753), and the firm's focus on representing patent plaintiffs, the following attorneys were identified as counsel of record.

• Stamatios Stamoulis (Lead Counsel)

  • Firm: Stamoulis & Weinblatt LLC, Wilmington, DE.
  • Note: Co-founder of his firm, Stamoulis has over 20 years of experience in intellectual property and complex commercial litigation, frequently representing plaintiffs in patent cases across major U.S. patent venues.

• Richard C. Weinblatt (Lead Counsel)

  • Firm: Stamoulis & Weinblatt LLC, Wilmington, DE.
  • Note: Co-founder of the firm, Weinblatt has over two decades of experience in patent litigation and prosecution and previously practiced at Fish & Richardson P.C.

• Brian E. D'Amico (Of Counsel)

  • Firm: Stamoulis & Weinblatt LLC, Wilmington, DE.
  • Note: This information is based on his listing on the complaint; public profiles for an attorney named Brian D'Amico show associations with other firms and practice areas, indicating his specific role and experience may be primarily tied to his work with Stamoulis & Weinblatt in this and similar patent campaigns.

• Matthew A. Rosenberg (Of Counsel)

  • Firm: Stamoulis & Weinblatt LLC, Wilmington, DE.
  • Note: Listed on the complaint for Monticello, Rosenberg's public-facing professional profiles are not prominently focused on patent litigation, suggesting a specialized of-counsel role within the firm for this litigation campaign.

Counsel for Defendant Microsoft Corporation

Due to the case's consolidation into the lead case Monticello Enterprises LLC v. Macy's Inc., et al. (6:23-cv-00753-XR) and its subsequent dismissal on March 18, 2026, there are no specific notices of appearance for counsel representing Microsoft Corporation in the public record for case 6:23-cv-00762.

However, based on filings and representative client lists in the consolidated litigation, counsel for the defendants in the broader litigation campaign by Monticello included attorneys from The Webb Law Firm. It is highly probable that this firm, acting as lead counsel for the coordinated defense, also represented Microsoft.

Likely Counsel for the Defense Consortium (Including Microsoft):

• Name: Bryan P. Clark

  • Role: Likely Lead Counsel
  • Firm: The Webb Law Firm (Pittsburgh, PA)
  • Note on Experience: An expert witness for the defendants in the consolidated case identified Bryan P. Clark as his contact attorney. The Webb Law Firm has extensive experience defending online retailers and technology companies in major patent litigation districts, including in Texas.

• Name: Kent E. Baldauf, Jr.

  • Role: Likely Counsel
  • Firm: The Webb Law Firm (Pittsburgh, PA)
  • Note on Experience: As a partner at the firm, Baldauf has experience working major litigation cases in Texas for online retailers sued for patent infringement, including Macy's, the lead defendant in the consolidated case.

• Name: Cecilia R. Dickson

  • Role: Likely Counsel
  • Firm: The Webb Law Firm (Pittsburgh, PA)
  • Note on Experience: Dickson is a partner at the firm with experience defending major retailers in intellectual property disputes.

It is common in multi-defendant patent litigation for one or a few firms to take the lead in representing a consortium of defendants with shared interests, which appears to be the strategy employed against Monticello's litigation campaign. The Webb Law Firm's representation of the lead defendant, Macy's, and its role coordinating with defense experts strongly suggest its leadership of the joint defense group that would have included Microsoft.