Solmetex, LLC v. Ascentcare Dental Products, Inc.

This active litigation, Solmetex, LLC v. Ascentcare Dental Products, Inc., centers on claims of patent infringement and Lanham Act violations between two competitors in the dental products market. Plaintiff Solmetex, LLC, headquartered in Northborough, MA, is a comprehensive provider of dental water safety and waste compliance systems, including amalgam separators, water management solutions, and regenerative biomaterials, largely serving dental practices across North America. Defendant Ascentcare Dental Products, Inc., located in Grand Haven, Michigan, is a smaller, family-owned company focused on engineering, designing, and manufacturing innovative dental technologies, particularly hands-free isolation and suction devices for dental procedures.

The core of the dispute involves Ascentcare's "VacuLUX isolation mouthpieces" and related dental isolation products, which Solmetex alleges infringe its intellectual property. The primary patent at issue in this case, as specified, is U.S. Patent No. 11,826,217. This patent is understood to cover aspects of dental isolation systems or fluid management within dental operatory settings, aligning with Solmetex's product portfolio, which includes technology from its acquisition of DryShield. Solmetex has accused Ascentcare of direct and indirect infringement, alleging that dental clinicians' use of Ascentcare's products in isolation systems, including Solmetex's own, infringes claims of the '217 patent.

The case is proceeding in the United States District Court for the Western District of Michigan, Southern Division, before the Honorable Robert J. Jonker. The Western District of Michigan serves as the defendant's home forum, given Ascentcare's operations in Grand Haven, Michigan. This litigation is notable due to the defendant's aggressive strategy of challenging Solmetex's patents at the Patent Trial and Appeal Board (PTAB) via multiple Inter Partes Review (IPR) petitions, including IPR2025-01065 specifically against U.S. Patent No. 11,826,217. Ascentcare filed a motion to stay the district court proceedings pending the outcomes of these IPRs, arguing that the PTAB's rulings would likely narrow the scope of the case. However, the IPR challenging the '217 patent resulted in a Director Discretionary Denial on October 17, 2025, which means the PTAB declined to institute a review, allowing the patent to remain unchallenged through that particular IPR process. This case represents a direct competitor dispute over dental technology, with the defendant claiming to be significantly smaller and alleging Solmetex is using litigation costs to gain an advantage.

The patent infringement litigation Solmetex, LLC v. Ascentcare Dental Products, Inc., Case No. 1:24-cv-00954-RJJ-MV, is active in the United States District Court for the Western District of Michigan. The case involves U.S. Patent No. 11,826,217, among others, and claims of Lanham Act violations.

Here's a chronological overview of the key legal developments and outcomes:

• Complaint Filed (2024-09-16): Solmetex, LLC initiated the lawsuit by filing a complaint against Ascentcare Dental Products, Inc.. The complaint asserted infringement of ten patents, including U.S. Patent No. 11,826,217, and alleged false and misleading advertising under the Lanham Act and Michigan state law.
• Rule 16 Scheduling Conference (2025-04-16): A Rule 16 conference was held, indicating the early procedural stages of the case. During this conference, parties discussed discovery protocols and issues related to claim narrowing.
• Motions to Join Parties/Amend Pleadings Deadline (2025-05-26): The First Case Management Order set a deadline of May 30, 2025, for motions or stipulations to join parties or amend pleadings.
• IPR Petition Filed against U.S. Patent No. 11,826,217 (2025-06-06): Ascentcare filed an Inter Partes Review (IPR) petition, IPR2025-01065, challenging the validity of U.S. Patent No. 11,826,217 at the Patent Trial and Appeal Board (PTAB). Ascentcare also filed other IPRs and one Post-Grant Review (PGR) against Solmetex's patents.
• Motion to Stay Proceedings Filed (before 2025-07-11): Ascentcare filed a motion to stay the district court proceedings pending the outcome of its IPR petitions at the PTAB. Ascentcare argued that a stay would conserve court and party resources, and that the PTAB's decisions could simplify the issues in the case. As of July 11, 2025, depositions had not yet occurred, and a Markman hearing was scheduled for December 15, 2025.
• Ascentcare's Proposed Claim Constructions (2025-09-22): Following a meet and confer, Ascentcare provided its proposed claim constructions for multiple patents, including the '217 patent.
• PTAB Denies Institution of IPRs (2025-10-09 & 2025-10-17): The PTAB issued Director Discretionary Decisions denying institution of Ascentcare's IPR petitions. Specifically, IPR2025-01057 was denied on October 9, 2025, and IPR2025-01065 (for U.S. Patent No. 11,826,217) was terminated with a Director Discretionary Decision to Deny on October 17, 2025. These denials mean the IPRs did not proceed to a full review of the patentability challenges.
• Claim Construction Briefing (Ongoing around late 2025): Solmetex filed its opening claim construction brief, which included both agreed-upon and disputed claim constructions. The Markman hearing was scheduled for December 15, 2025.
• Fact Discovery Close (2026-01-21): Fact discovery was scheduled to close on January 21, 2026.
• Status: The case remains active. The denial of the IPR petitions by the PTAB suggests that the patent validity issues will continue to be litigated in the district court. Without a granted stay, the litigation schedule is expected to proceed with claim construction and further discovery.

Here is the counsel of record representing Solmetex, LLC, the plaintiff in Solmetex, LLC v. Ascentcare Dental Products, Inc., Case No. 1:24-cv-00954-RJJ-MV:

• Jonathan E. Singer

  • Role: Lead Counsel (strongly implied by extensive experience in high-stakes patent litigation and lead counsel roles in other major cases).
  • Firm: Fish & Richardson P.C., San Diego, California.
  • Experience: Renowned life sciences industry leader and trial attorney with over three decades of experience, including taking pharmaceutical patent disputes to the U.S. Supreme Court and securing reversals of significant jury verdicts. He was lead counsel in Prometheus Laboratories v. Mayo Collaborative Services and Gilead Sciences, Inc. v. Merck & Co..

• Mark A. Stachiw

  • Role: Of Counsel.
  • Firm: Klemchuk PLLC, Dallas, Texas.
  • Experience: Extensive experience in managing complex commercial, intellectual property, and securities litigation, with a focus on telecommunications and technology industries.

• Angelo Christopher

  • Role: Respondent Counsel in parallel PTAB IPR proceedings for Solmetex.
  • Firm: The search results indicate "Christopher, Angeloet al" as respondent counsel in IPR proceedings for Solmetex but do not explicitly state his firm or office location in direct relation to this case's counsel of record in the district court. Further specific docket entries would be needed to definitively establish his role and firm in the district court case.

No specific local counsel for the Western District of Michigan was explicitly identified for Solmetex in the provided search results beyond the mentioned firms. The search did not reveal any sealed filings preventing the identification of counsel.

Ascentcare Dental Products, Inc. is represented by a team of attorneys from two firms: Miller Johnson and Irwin IP LLP.

Here is the breakdown of counsel for the defendant(s):

Miller Johnson

• Nathan P. Sportel
  • Role: Lead Counsel
  • Firm & Office: Miller Johnson, Grand Rapids, MI
  • Experience Note: Sportel is an experienced patent attorney specializing in patent prosecution, patent litigation, and post-grant proceedings, including Inter Partes Review (IPR), where he has an unblemished track record for institution and patent invalidity. He is a former patent examiner with an electrical engineering background and was counsel in the precedential Sotera v. Masimo opinion, which created the "Sotera Stipulation."
• D. Andrew Portinga
  • Role: Counsel
  • Firm & Office: Miller Johnson, Grand Rapids, MI
  • Experience Note: (Further specific patent litigation experience for this case or notable past cases not detailed in the provided search results, but generally practices at a firm with a robust IP litigation group).
• Jacob L. Carlton
  • Role: Counsel
  • Firm & Office: Miller Johnson, Grand Rapids, MI
  • Experience Note: (Further specific patent litigation experience for this case or notable past cases not detailed in the provided search results, but generally practices at a firm with a robust IP litigation group).

Irwin IP LLP

• Jason Keener
  • Role: Counsel
  • Firm & Office: Irwin IP LLP (Office location not explicitly stated in the provided snippets, but typically Chicago for Irwin IP LLP).
  • Experience Note: (Further specific patent litigation experience for this case or notable past cases not detailed in the provided search results, but practices at a firm specializing in IP litigation).
• Lisa Holubar
  • Role: Counsel
  • Firm & Office: Irwin IP LLP (Office location not explicitly stated in the provided snippets).
  • Experience Note: (Further specific patent litigation experience for this case or notable past cases not detailed in the provided search results, but practices at a firm specializing in IP litigation).
• Daniel Zhang
  • Role: Counsel
  • Firm & Office: Irwin IP LLP (Office location not explicitly stated in the provided snippets).
  • Experience Note: (Further specific patent litigation experience for this case or notable past cases not detailed in the provided search results, but practices at a firm specializing in IP litigation).
• Alex Bennett
  • Role: Counsel
  • Firm & Office: Irwin IP LLP (Office location not explicitly stated in the provided snippets).
  • Experience Note: (Further specific patent litigation experience for this case or notable past cases not detailed in the provided search results, but practices at a firm specializing in IP litigation).