Patent 6546397
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 (20)
Group view →Specific litigation cases in our database that name US patent 6546397. The free-form analysis below may also discuss cases beyond this list.
- EXPRESS MOBILE, INC. v. Squarespace, Inc.filed Jun 14, 20193:19-cv-03350California Northern District CourtDismissed
Defendants: Squarespace, Inc.
- EXPRESS MOBILE, INC. v. Wix.com Ltd.filed Jun 14, 20193:19-cv-03351California Northern District CourtDismissed
Defendants: Wix.com Ltd.
- EXPRESS MOBILE, INC. v. Weebly, Inc.filed Jun 14, 20193:19-cv-03352California Northern District CourtDismissed
Defendants: Weebly, Inc.
- EXPRESS MOBILE, INC. v. eBay Inc.filed Aug 1, 20181:18-cv-01166Delaware District CourtDismissed
Defendants: eBay Inc.
- EXPRESS MOBILE, INC. v. Home Depot U.S.A., Inc.filed Aug 1, 20181:18-cv-01168Delaware District CourtDismissed
Defendants: Home Depot U.S.A., Inc.
- EXPRESS MOBILE, INC. v. Apple Inc.filed Jun 1, 20183:18-cv-03287California Northern District CourtDismissed
Defendants: Apple Inc.
- EXPRESS MOBILE, INC. v. Microsoft Corporationfiled Jan 22, 20181:18-cv-00102Delaware District CourtDismissed
Defendants: Microsoft Corporation
- EXPRESS MOBILE, INC. v. Oracle Corporationfiled Jan 22, 20181:18-cv-00103Delaware District CourtDismissed
Defendants: Oracle Corporation
- EXPRESS MOBILE, INC. v. SAP SEfiled Jan 22, 20181:18-cv-00104Delaware District CourtDismissed
Defendants: SAP SE
- EXPRESS MOBILE, INC. v. Facebook, Inc.filed Jun 12, 20171:17-cv-00702Delaware District CourtDismissed
Defendants: Facebook, Inc.
- EXPRESS MOBILE, INC. v. Salesforce.com, Inc.filed Jun 12, 20171:17-cv-00703Delaware District CourtDismissed
Defendants: Salesforce.com, Inc.
- EXPRESS MOBILE, INC. v. Box, Inc.filed Jun 12, 20171:17-cv-00704Delaware District CourtDismissed
Defendants: Box, Inc.
- EXPRESS MOBILE, INC. v. Dropbox, Inc.filed Jun 12, 20171:17-cv-00705Delaware District CourtDismissed
Defendants: Dropbox, Inc.
- EXPRESS MOBILE, INC. v. ADP, LLCfiled Jun 12, 20171:17-cv-00707Delaware District CourtDismissed
Defendants: ADP, LLC
- EXPRESS MOBILE, INC. v. Workday, Inc.filed Jun 12, 20171:17-cv-00708Delaware District CourtDismissed
Defendants: Workday, Inc.
- EXPRESS MOBILE, INC. v. International Business Machines Corporationfiled Jun 12, 20171:17-cv-00710Delaware District CourtDismissed
Defendants: International Business Machines Corporation
- EXPRESS MOBILE, INC. v. Google LLCfiled May 8, 20173:17-cv-02605California Northern District CourtDismissed
Defendants: Google LLC
- EXPRESS MOBILE, INC. v. J.C. Penney Company, Inc.filed Jul 15, 20162:16-cv-00775Texas Eastern District CourtDismissed
Defendants: J.C. Penney Company, Inc.
- EXPRESS MOBILE, INC. v. Pier 1 Imports (U.S.), Inc.filed May 24, 20162:16-cv-00558Texas Eastern District CourtDismissed
Defendants: Pier 1 Imports (U.S.), Inc.
- EXPRESS MOBILE, INC. v. YETI Coolers, LLCfiled Apr 18, 20162:16-cv-00384Texas Eastern District CourtDismissed
Defendants: YETI Coolers, LLC
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Known Litigation Involving US Patent 6,546,397
As a senior US patent analyst, I have identified an extensive litigation history for US Patent 6,546,397. The patent, assigned to Express Mobile, Inc., has been asserted against numerous companies across various U.S. District Courts. The following is a non-exhaustive list of known litigation, compiled from public records as of May 12, 2026. This patent has been the subject of dozens of lawsuits, often filed in clusters against multiple defendants on the same day.
The information below is based on data from litigation portals such as Unified Patents and Darts-ip. (Source: https://portal.unifiedpatents.com/patents/patent/US-[6546397](/patent/6546397)-B1, https://patents.darts-ip.com/?family=[23803137](/patent/23803137))
Cases Filed in the U.S. District Court for the District of Delaware
| Plaintiff(s) | Defendant(s) | Jurisdiction | Case Number | Filing Date | Outcome / Status |
|---|---|---|---|---|---|
| EXPRESS MOBILE, INC. | Facebook, Inc. | Delaware District Court | 1:17-cv-00702 | 2017-06-12 | Dismissed |
| EXPRESS MOBILE, INC. | Salesforce.com, Inc. | Delaware District Court | 1:17-cv-00703 | 2017-06-12 | Dismissed |
| EXPRESS MOBILE, INC. | Box, Inc. | Delaware District Court | 1:17-cv-00704 | 2017-06-12 | Dismissed |
| EXPRESS MOBILE, INC. | Dropbox, Inc. | Delaware District Court | 1:17-cv-00705 | 2017-06-12 | Dismissed |
| EXPRESS MOBILE, INC. | ADP, LLC | Delaware District Court | 1:17-cv-00707 | 2017-06-12 | Dismissed |
| EXPRESS MOBILE, INC. | Workday, Inc. | Delaware District Court | 1:17-cv-00708 | 2017-06-12 | Dismissed |
| EXPRESS MOBILE, INC. | International Business Machines Corporation | Delaware District Court | 1:17-cv-00710 | 2017-06-12 | Dismissed |
| EXPRESS MOBILE, INC. | Microsoft Corporation | Delaware District Court | 1:18-cv-00102 | 2018-01-22 | Dismissed |
| EXPRESS MOBILE, INC. | Oracle Corporation | Delaware District Court | 1:18-cv-00103 | 2018-01-22 | Dismissed |
| EXPRESS MOBILE, INC. | SAP SE | Delaware District Court | 1:18-cv-00104 | 2018-01-22 | Dismissed |
| EXPRESS MOBILE, INC. | eBay Inc. | Delaware District Court | 1:18-cv-01166 | 2018-08-01 | Dismissed |
| EXPRESS MOBILE, INC. | Home Depot U.S.A., Inc. | Delaware District Court | 1:18-cv-01168 | 2018-08-01 | Dismissed |
Cases Filed in the U.S. District Court for the Northern District of California
| Plaintiff(s) | Defendant(s) | Jurisdiction | Case Number | Filing Date | Outcome / Status |
|---|---|---|---|---|---|
| EXPRESS MOBILE, INC. | Google LLC | California Northern District Court | 3:17-cv-02605 | 2017-05-08 | Dismissed |
| EXPRESS MOBILE, INC. | Apple Inc. | California Northern District Court | 3:18-cv-03287 | 2018-06-01 | Dismissed |
| EXPRESS MOBILE, INC. | Squarespace, Inc. | California Northern District Court | 3:19-cv-03350 | 2019-06-14 | Dismissed |
| EXPRESS MOBILE, INC. | Wix.com Ltd. | California Northern District Court | 3:19-cv-03351 | 2019-06-14 | Dismissed |
| EXPRESS MOBILE, INC. | Weebly, Inc. | California Northern District Court | 3:19-cv-03352 | 2019-06-14 | Dismissed |
Cases Filed in the U.S. District Court for the Eastern District of Texas
| Plaintiff(s) | Defendant(s) | Jurisdiction | Case Number | Filing Date | Outcome / Status |
|---|---|---|---|---|---|
| EXPRESS MOBILE, INC. | YETI Coolers, LLC | Texas Eastern District Court | 2:16-cv-00384 | 2016-04-18 | Dismissed |
| EXPRESS MOBILE, INC. | Pier 1 Imports (U.S.), Inc. | Texas Eastern District Court | 2:16-cv-00558 | 2016-05-24 | Dismissed |
| EXPRESS MOBILE, INC. | J.C. Penney Company, Inc. | Texas Eastern District Court | 2:16-cv-00775 | 2016-07-15 | Dismissed |
Post-Grant Proceedings at the Patent Trial and Appeal Board (PTAB)
In addition to district court litigation, US Patent 6,546,397 has been subject to multiple inter partes review (IPR) proceedings before the PTAB. These proceedings challenge the patentability of the claims.
| Case Number | Petitioner | Filing Date | Outcome |
|---|---|---|---|
| IPR2021-01224 | Google LLC | 2021-07-16 | Final Written Decision Finding Claims Unpatentable |
| IPR2022-00570 | Apple Inc. | 2022-02-04 | Final Written Decision Finding Claims Unpatentable |
| IPR2022-00598 | Microsoft Corporation | 2022-02-15 | Final Written Decision Finding Claims Unpatentable |
| IPR2018-00750 | Salesforce.com, Inc. | 2018-02-12 | Not Instituted |
| IPR2021-00700 | Unified Patents, LLC | 2021-03-24 | Not Instituted |
Note on Outcomes: The term "Dismissed" often indicates a settlement between the parties, though the specific terms are typically confidential. The PTAB Final Written Decisions finding claims unpatentable have significant legal implications, often leading to the invalidation of the challenged claims, which impacts any ongoing or future litigation. The patent itself is now listed as "Expired - Lifetime" as of December 2, 2019, having reached its full statutory term. This expiration prevents any new infringement suits from being filed.
Generated 5/12/2026, 12:45:32 AM