Patent 11520378
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
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No PTAB proceedings on file. This patent has not been challenged through Inter Partes Review, Post-Grant Review, or Covered Business Method review at the USPTO. The absence is itself a signal — well-asserted patents eventually attract IPRs.
Cases on file (2)
Group view →Specific litigation cases in our database that name US patent 11520378. The free-form analysis below may also discuss cases beyond this list.
- Lepton Computing LLC v. Samsung Electronics America Inc et al.filed Apr 23, 20262:26-cv-00338Texas Eastern District CourtOpen
Defendants: Samsung Electronics America Inc and Samsung Electronics Co Ltd
Other patents asserted: 11693450, 11086361, 11048299, 11209863, 12140998, 11093002, 11520377, 11048300
The accused products are Samsung's Galaxy Z series of foldable smartphones, including the Flip, Fold, and TriFold models.
- U.S. District Court for the Eastern District of TexasActive
Defendants: Samsung Electronics and Samsung Electronics US subsidiary
Other patents asserted: 11048299, 11048300, 11086361, 11093002, 11209863, 11520377, 11693450, 12140998
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Based on a review of recently published reports, a patent infringement lawsuit has been filed by Lepton Computing LLC that includes U.S. Patent No. 11,520,378.
Case Details:
- Plaintiff: Lepton Computing LLC
- Defendant: Samsung Electronics and its US subsidiary
- Jurisdiction: U.S. District Court for the Eastern District of Texas
- Case Number: Information not publicly available in the initial reports.
- Filing Date: Reports of the lawsuit emerged around April 25-27, 2026.
- Status: The case is in its early stages, and no court determinations have been made yet.
- Patents-in-Suit: U.S. Patent No. 11,520,378 is one of nine patents Lepton Computing LLC is asserting against Samsung. The other patents are 11,048,299, 11,048,300, 11,086,361, 11,093,002, 11,209,863, 11,520,377, 11,693,450, and 12,140,998.
- Accused Products: The lawsuit targets Samsung's foldable phones, including the Galaxy Z Fold and Z Flip series, starting from the Galaxy Z Fold 3 and Flip 3 models, as well as the new Galaxy Z TriFold.
- Summary of Allegations: Lepton Computing LLC, which describes itself as an early developer of foldable smartphones, alleges that Samsung's foldable devices infringe on its patents covering key technologies for such devices. These technologies include hardware structure, hinge design, display protection, and software features like "app continuity" for transitioning between folded and unfolded states. Lepton is seeking damages and a permanent injunction to halt the sale of Samsung's foldable phones in the United States. It is worth noting that some reports suggest Lepton Computing may be a non-practicing entity, sometimes referred to as a "patent troll," as the company has not commercially released any products.
Generated 5/1/2026, 11:04:35 PM