XODUS MEDICAL v. Mullen: Surgical Pad Patent Dispute Ends in Dismissal
What would you like to do next?
Choose your path based on your current needs:
Introduction
After nearly five years of litigation spanning 1,770 days, XODUS MEDICAL, Inc.’s patent infringement action against Mark Mullen concluded with a joint stipulated dismissal without prejudice in the U.S. District Court for South Carolina. Filed in March 2021 and closed January 15, 2026, the case centered on three United States patents covering surgical patient positioning and padding technology — with the accused product being the SurgyPad.
The case’s resolution through mutual dismissal rather than a court-rendered verdict is itself a strategic signal. For patent attorneys tracking surgical device patent infringement trends, IP professionals monitoring medical device IP portfolios, and R&D teams developing patient positioning products, this case offers meaningful lessons about litigation duration, multi-patent assertion strategies, and the practical calculus behind dismissals without prejudice.
Critically, the parties agreed each side would bear its own attorneys’ fees — a provision that informs how litigation risk was ultimately shared and how both sides likely assessed their respective positions heading into year five.
📋 Case Summary
| Case Name | XODUS MEDICAL, Inc. v. Mark Mullen |
| Case Number | 7:21-cv-00727 (D.S.C.) |
| Court | U.S. District Court for South Carolina |
| Duration | March 2021 – Jan 2026 1,770 days (~4.85 years) |
| Outcome | Dismissal Without Prejudice |
| Patents at Issue | |
| Accused Products | SurgyPad |
Case Overview
The Parties
⚖️ Plaintiff
A medical device company focused on surgical patient positioning and protection products with an IP portfolio covering surgical padding systems.
🛡️ Defendant
The individual respondent in this patent infringement action. The involvement of a single named defendant is procedurally notable.
The Patents at Issue
Three patents formed the basis of XODUS MEDICAL’s infringement claims, covering surgical patient positioning and padding technology. Asserting multiple related patents is a common strategy to create claim-coverage depth and complicate design-around efforts.
- • US8511314B2 — Surgical padding or positioning technology
- • US8464720B1 — Related surgical patient protection system
- • US9161876B2 — Further surgical positioning or pad-related claims
Developing a new medical device?
Check if your surgical pad design might infringe these or related patents before launch.
Legal Representation
Plaintiff XODUS MEDICAL was represented by attorneys Anthony W. Brooks, Daniel J. Murray, Jeffrey L. Payne, Kent E. Baldauf Jr., R. Taylor Speer, and Thomas C. Wolski, across three firms: Fox Rothschild LLP (Greenville), The Webb Law Firm PC, and Turner Padget Graham & Laney.
Defendant Mark Mullen was represented by Dean D. Niro and Timothy David St. Clair of Parker Poe Adams and Bernstein and Vitale Vickery Niro Solon and Gasey LLP.
Litigation Timeline & Procedural History
The case was filed in the U.S. District Court for the District of South Carolina under Chief Judge Donald C. Coggins, Jr. The 1,770-day duration from filing to closure is notably lengthy for a district court patent case that ultimately resolved without trial, suggesting extensive pre-trial proceedings.
- • Complaint Filed: March 12, 2021
- • Case Closed: January 15, 2026
- • Total Duration: 1,770 days (~4.85 years)
- • Court: U.S. District Court for the District of South Carolina
- • Presiding Judge: Hon. Donald C. Coggins, Jr.
The Verdict & Legal Analysis
Outcome
The action was dismissed without prejudice pursuant to Fed. R. Civ. P. 41(a)(1)(A)(ii) — a stipulated dismissal signed by counsel for both parties. No damages award, injunctive relief, or court-adjudicated finding on validity or infringement was issued. Each party agreed to bear its own costs and attorneys’ fees.
Key Legal Issues
The case was brought as a straightforward patent infringement action. The multi-patent assertion strategy likely played a role in the extensive litigation. The procedural vehicle of “dismissal without prejudice” preserves the plaintiff’s right to refile, indicating a negotiated resolution rather than an adjudicated outcome.
The stipulation that each party bears its own costs departs from fee-shifting outcomes under 35 U.S.C. § 285 (exceptional case standard), suggesting neither party achieved a dominant enough position to justify such claims, or that settlement terms addressed economics outside the court record.
Industry & Competitive Implications
The XODUS MEDICAL v. Mullen litigation reflects a broader trend in medical device patent enforcement: IP holders in niche surgical supply categories are increasingly willing to pursue multi-year district court litigation to protect product-specific technology, even against individual defendants.
For companies operating in the surgical positioning, patient safety padding, or operating room supply markets, this case signals that patent portfolios covering incremental product improvements — like variations in surgical pad design or material — will be actively asserted. The three patents here represent sequential application filings (applications 13/773,290; 13/737,552; 13/957,778), suggesting a deliberate portfolio-building strategy by XODUS MEDICAL around core technology.
Companies evaluating entry into the surgical padding product segment should conduct thorough FTO analysis covering XODUS MEDICAL’s patent family and monitor continuation applications for future assertion risk.
Freedom to Operate (FTO) Analysis for Surgical Devices
This case highlights critical IP risks in surgical device design. Choose your next step:
📋 Understand This Case’s Impact
Learn about the specific risks and implications from this medical device litigation.
- View all related patents in this technology space
- See which companies are active in surgical device IP
- Understand claim construction patterns for medical pads
🔍 Check My Product’s Risk
Run a comprehensive FTO analysis for your own technology or product.
- Input your product description or technical features
- AI identifies potentially blocking patents
- Get actionable risk assessment report
High Risk Area
Surgical patient positioning & padding
3 Asserted Patents
In surgical device IP space
Proactive FTO
Essential for new product launches
✅ Key Takeaways
Stipulated dismissals under Rule 41(a)(1)(A)(ii) after multi-year litigation warrant scrutiny of underlying negotiation dynamics.
Search related case law →Three-patent assertion strategies in medical devices create both leverage and cost exposure — model both directions.
Explore litigation strategies →Absence of fee-shifting in the stipulation suggests no exceptional case findings were pursued or achieved.
Understand fee shifting →XODUS MEDICAL’s sequential patent filings (three related applications) demonstrate effective patent portfolio layering for surgical device technology.
Monitor patent families →Monitor the three patent numbers (US8511314B2, US8464720B1, US9161876B2) for continuation filings or reexamination proceedings.
Track patent status →Frequently Asked Questions
Three patents: US8511314B2, US8464720B1, and US9161876B2 — all directed to surgical patient positioning and padding technology. The accused product was the SurgyPad.
The parties filed a joint stipulation of dismissal without prejudice under Fed. R. Civ. P. 41(a)(1)(A)(ii), with each side bearing its own costs and fees. No adjudicated finding on infringement or validity was issued.
It reinforces that multi-patent assertions in surgical device niches can drive extended litigation and negotiated resolution. Companies in this space should prioritize proactive FTO analysis and portfolio monitoring.
Ready to Strengthen Your Patent Strategy?
Join 18,000+ IP professionals using PatSnap Eureka to conduct prior art searches, draft patents, and analyse competitive landscapes with AI-powered precision.
References
- PACER — Case No. 7:21-cv-00727 (D.S.C.)
- USPTO Patent Center
- Google Patents — Related Medical Device Patent Cases
- Cornell Legal Information Institute — Fed. R. Civ. P. 41
- Cornell Legal Information Institute — 35 U.S.C. § 285
This article is for informational purposes only and does not constitute legal advice. All case information is drawn from publicly available court records. For platform capabilities, visit PatSnap.