If a Kyleena IUD migrated, perforated your uterus, or required surgery to remove, you can file an individual personal injury lawsuit against Bayer, the device’s manufacturer. As of 2026, a Kyleena lawsuit is filed on its own in state or federal court; there is no multidistrict litigation (MDL), no certified class action, and no global settlement covering the device.1LawFold. Kyleena Lawsuit Cases are proceeding as a mass tort, meaning each plaintiff’s claim moves forward separately even when lawyers handle many of them together.
Injuries That Support a Claim
Not every side effect qualifies. Spotting, cramping, and other mild reactions listed on the label are not the basis for a lawsuit. The injuries driving current Kyleena cases are the serious ones that typically require imaging, hospitalization, or surgery:
- Device migration, where the IUD shifts out of the uterus into the abdominal cavity or near the bowel, bladder, or fallopian tubes, sometimes causing internal bleeding, adhesions, scarring, or infertility.
- Uterine perforation, either at insertion or as the device moves later, which can damage the intestines, bladder, or bowel and lead to procedures such as bowel resection.
- Embedment in the uterine wall, making ordinary removal impossible.
- Ectopic pregnancy when the device fails. A published case report described a 31-year-old Kyleena user whose ectopic pregnancy ruptured and required emergency surgery.2National Library of Medicine. Ectopic Pregnancy With Kyleena Intrauterine Device
- Surgical removal by laparoscopy or open abdominal surgery to retrieve a migrated or embedded device.
- Serious pelvic infection, chronic pelvic pain after removal, organ damage, and loss of reproductive capacity.1LawFold. Kyleena Lawsuit
Bayer’s FDA-approved prescribing label does acknowledge perforation, ectopic pregnancy, and pelvic infection as known risks, and lists perforation as occurring in fewer than 0.1% of clinical trial participants.3FDA. Kyleena Prescribing Information The lawsuits do not dispute that these risks appear somewhere in the paperwork; they dispute how the frequency and severity were presented.
What Plaintiffs Say Bayer Did Wrong
Kyleena cases rest on a failure-to-warn theory of product liability. Plaintiffs allege Bayer knew about serious complications, minimized them in marketing, and did not give doctors and patients enough information to make an informed choice about the device.1LawFold. Kyleena Lawsuit The theory targets the gap between what the label technically discloses and how the risk is communicated in practice.
The FDA has taken labeling-related action against Bayer on the older Mirena IUD, once instructing the company to strip qualifiers like “rarely” and “most often” from its description of perforation risk, and accusing Bayer of overstating Mirena’s effectiveness.4The Flaw. Safe and Effective? IUDs and the Corporate Power Problem No comparable public action specific to Kyleena’s labeling has been documented. The FDA has not issued a recall or a Kyleena-specific safety communication.1LawFold. Kyleena Lawsuit
Evidence and Deadlines for Filing
A viable Kyleena claim generally requires medical documentation tying a serious injury to the device. That typically means:
- Imaging, such as ultrasound, X-ray, or MRI, showing where the device ended up.
- Surgical records if the IUD had to be removed by a procedure.
- Hospital and follow-up records documenting the complication and any ongoing treatment.1LawFold. Kyleena Lawsuit
You can still file after the device has been removed, provided you kept or can obtain the records. Statutes of limitations vary by state but generally run two to three years from the date the injury was discovered or should reasonably have been discovered. Waiting past that window can bar a claim entirely, and time-bar dismissals were common in the earlier Mirena cases.
Where the Litigation Stands in 2026
Kyleena is not a class action, and the federal court system has not created an MDL for it. Individual suits are being filed in state and federal courts, sometimes alongside broader Bayer IUD claims. No bellwether trials have taken place, and no settlement covers Kyleena. Projected timelines put discovery and depositions through 2026 and 2027, possible bellwether trials in 2027 or 2028, and settlement talks conceivably in the 2027 to 2029 window.1LawFold. Kyleena Lawsuit Those are estimates, and mass tort schedules routinely slip.
What the Mirena Cases Mean for Kyleena Plaintiffs
Kyleena uses the same hormone (levonorgestrel) as Mirena and has the same manufacturer, so the Mirena litigation is the closest map of what Kyleena plaintiffs are likely to run into.
Two federal MDLs were created for Mirena in the Southern District of New York. MDL 2434 covered uterine perforation and migration claims; MDL 2767 covered claims that Mirena caused idiopathic intracranial hypertension, a condition of elevated pressure inside the skull.5CourtListener. In Re Mirena IUD Products Liability Litigation6JPML. In Re Mirena IUS Levonorgestrel-Related Products Liability Litigation (No. II), MDL No. 2767 Both ended badly for plaintiffs. In the perforation cases, judges excluded plaintiffs’ expert witnesses under the Daubert standard, which governs whether scientific testimony is admissible, and Bayer won summary judgment; the Second Circuit affirmed, and the Supreme Court declined review. In the intracranial hypertension cases, Judge Paul Engelmayer excluded all seven of the plaintiffs’ causation experts, finding they had not shown Mirena was capable of causing the condition.7FDLI. In Re Mirena IUS Levonorgestrel-Related Products Liability Litigation (No. II)
Bayer did settle a slice of the Mirena perforation claims. In 2018 the company paid $12.2 million to resolve roughly 4,000 to 4,600 organ perforation cases across the federal MDL and state courts in New Jersey, Missouri, and California.8ConsumerSafety.org. Mirena Lawsuits That settlement was for Mirena only and did not include Kyleena.4The Flaw. Safe and Effective? IUDs and the Corporate Power Problem The federal Mirena MDLs closed by late 2020, and the New Jersey multicounty litigation closed in April 2021.9Drugwatch. Mirena Lawsuits
Two takeaways matter for anyone considering a Kyleena claim. First, the central obstacle in Mirena was scientific causation: plaintiffs could not get expert testimony past a Daubert challenge, and Kyleena plaintiffs will face the same test. Second, Bayer has historically leaned on the learned intermediary doctrine, the rule that a drug maker’s duty to warn runs to the prescribing physician rather than directly to the patient; if the doctor received adequate warnings, the company argues its duty was met regardless of what the patient understood.4The Flaw. Safe and Effective? IUDs and the Corporate Power Problem Expect both defenses in a Kyleena case.