Mitchell Silberberg & Knupp
Counsel of record in 37 federal IP lawsuits tracked by IP Feed.
- Openfor plaintiffN.D. Cal.2026-10-15UMG Recordings, Inc. v. Last Brand, Inc.
UMG Recordings sues Last Brand for copyright infringement over allegedly unauthorized music use.
- Openfor plaintiffC.D. Cal.2026-10-15Take Two Interactive Software, Inc. v. Playerauctions, Inc.
Take Two Interactive sues Playerauctions for copyright infringement over virtual game item sales.
- Openfor plaintiffC.D. Cal.2026-10-15Dua Lipa v. Samsung Electronics America, Inc.
Dua Lipa sues Samsung for copyright infringement over unauthorized use of her work.
- Openfor plaintiffC.D. Cal.2026-10-07Blizzard Entertainment, Inc. v. Derek S. Powell
Blizzard Entertainment sues Powell for copyright infringement in federal court.
- Openfor defendantC.D. Cal.2026-10-05RG Media Properties, LLC v. Blumhouse Productions, LLC
RG Media Properties sues Blumhouse Productions for copyright infringement over allegedly copied creative work.
- Openfor plaintiffC.D. Cal.2026-09-25Activision Publishing, Inc. v. Ryan Rothholz
Activision Publishing sues Ryan Rothholz and others for copyright infringement.
- Closedfor plaintiffWAWD2026-09-23Nintendo of America Inc v. Williams
Nintendo sues James C Williams for copyright infringement in the Western District of Washington.
- Openfor defendantC.D. Cal.2026-09-11Bosko Kante v. Dua Lipa
Bosko Kante is suing Dua Lipa, Warner Records, Warner Music Group, and others for copyright infringement in federal court. The lawsuit alleges unauthorized use of Kante's work in connection with Lipa's music or recordings. The case centers on claims that Kante's intellectual property rights were violated.
- Openfor defendantC.D. Cal.2026-09-08Carl Watts v. Universal Pictures
Carl Watts sues Universal Pictures for allegedly copying his copyrighted work without permission.
- Openfor defendantC.D. Cal.2026-09-04Ivory Paynes v. Devante McCreary
Ivory Paynes sues Devante McCreary and music industry parties for copyright infringement.
- Openfor plaintiffC.D. Cal.2026-09-04Activision Publishing, Inc. v. Julian Angel Valenzuela
Activision sues Julian Angel Valenzuela for copyright infringement and DMCA violations related to digital content.
- Openfor defendantS.D.N.Y.2026-09-04Mcgucken v. Celebrity Cruises, Inc.
Dr. Elliot Mcgucken sues Celebrity Cruises and Royal Caribbean for copyright infringement over allegedly stolen creative works.
- Closedfor plaintiffS.D.N.Y.2026-09-03EMI Blackwood Music, Inc. v. Vimeo, LLC
EMI Blackwood Music and related EMI entities sued Vimeo for copyright infringement, alleging the video platform hosted user-uploaded content featuring unlicensed songs from EMI's catalog without permission or payment. The case targets Vimeo's alleged failure to prevent or remove infringing musical compositions and sound recordings.
- Openfor defendantC.D. Cal.2026-09-02Artist Revenue Advocates, LLC v. Kanye Omari West
Artist Revenue Advocates sues Kanye West for copyright infringement related to music or content.
- Openfor plaintiffC.D. Cal.2026-09-01Zynga, Inc. v. Flow Games Bilisim Yazilim ve Pazarlama Anonim Sirketi
Zynga and Peak Games sued Flow Games for copyright infringement over mobile game design. The lawsuit centers on allegations that Flow Games copied gameplay mechanics, visual elements, or other protected creative aspects from Zynga's or Peak's games. The case involves competing mobile game developers in a crowded market where design similarities often spark disputes.
- Closedfor defendantC.D. Cal.2026-08-30Marc Wolstenholme v. Riot Games, Inc.
Marc Wolstenholme sues Riot Games for copyright infringement over League of Legends game content.
- Openfor defendantILND2026-07-27Rasputin Stash LLC, at al. v. Campbell
Musicians and producers Ernest Frank Donaldson, Martin Dumas's estate, and Paul N Coleman, along with Rasputin Stash LLC, are suing Cory Woods, Joseph Guillmeron Jones, and major music labels including Interscope, Warner Music Group, and Universal Music Group for copyright infringement. The lawsuit targets producers John King and Mike Simpson and Cyanide Breathmint Music, alleging unauthorized use of copyrighted musical compositions or recordings.
- Openfor defendantC.D. Cal.2026-07-20Spheres Music, LLC v. John Murphy
Spheres Music sues John Murphy and Warner Bros. for copyright infringement over music composition.
- Openfor defendantC.D. Cal.2026-06-23Michael Giordano v. EMI Blackwood Music Inc.
Michael Giordano sues EMI Blackwood Music and others for copyright infringement over a musical work.
- ClosedC.D. Cal.2026-06-17Core Optical Technologies, LLC v. Nokia Corporation
Core Optical Technologies is suing Nokia Corporation and Nokia of America Corporation for patent infringement. The lawsuit involves optical technology patents, with Northrop Grumman Corporation named as a counter defendant and intervenor in the case.
- Closedfor plaintiffC.D. Cal.2026-06-01Blizzard Entertainment, Inc. v. Turtle Wow
Blizzard Entertainment sues Turtle Wow for copyright infringement over unauthorized use of World of Warcraft game content.
- Openfor plaintiffC.D. Cal.2026-05-13Spyglass Media Group LLC v. The Alterian Ghost Factory, Inc. d/b/a Alterian, Inc.
Spyglass Media sues Alterian over copyright infringement regarding film or media intellectual property rights.
- Openfor defendantC.D. Cal.2026-05-11The Alterian Ghost Factory, Inc. v. Easter Unlimited, Inc.
The Alterian Ghost Factory sues Easter Unlimited for copyright infringement over allegedly stolen creative content.
- Closedfor plaintiffC.D. Cal.2026-04-21Activision Publishing, Inc. v. Warzone.com, LLC
Activision sues Warzone.com over trademark rights to the "Warzone" name used in its Call of Duty game.
- Openfor plaintiffN.D. Cal.2025-05-02Zynga, Inc. v. AdOne Pte. Ltd.
Zynga and Rollic Games are suing AdOne for copyright infringement. The case involves alleged unauthorized copying of creative works, though the specific games or materials at issue are not detailed in the court filing. The lawsuit seeks damages for the alleged intellectual property violation.
- Openfor defendantS.D.N.Y.2024-09-12LaGreca v. Universal Music Group
Salvatore LaGreca sued Universal Music Group for copyright infringement in federal court.
- Openfor defendantS.D.N.Y.2024-02-07Minden Pictures, Inc. v. Seeking Alpha Inc.
Minden Pictures sues Seeking Alpha for copyright infringement over unauthorized use of photographic content.
- Openfor plaintiffN.D. Cal.2023-04-05Take-Two Interactive Software, Inc. v. Papenhoff
Take-Two Interactive sued Papenhoff and others for copyright infringement.
- Closedfor plaintiffN.D. Cal.2023-02-21Bungie, Inc. v. Thorpe
Bungie sues Thorpe and others for copyright infringement, alleging unauthorized use of Bungie's creative works.
- Openfor defendantS.D. Cal.2022-11-14Brooks Entertainment, Inc. v. Activision Blizzard, Inc.
Brooks Entertainment is suing Rockstar Games and Activision Blizzard for trademark infringement under the Lanham Act. The lawsuit centers on alleged unauthorized use of Brooks Entertainment's trademark, though the specific mark at issue is not detailed in the available case information.
- Closedfor plaintiffC.D. Cal.2022-02-11Nexon America Inc v. S. H.
Nexon America is suing J. C. H. and S. H. for copyright infringement. The lawsuit involves unauthorized copying or use of Nexon's copyrighted work. The case is proceeding in the Central District of California with mediator Phyllis G. Pollack.
- Openfor plaintiffC.D. Cal.2021-09-30ABKCO Music Inc. v. Roblox Corporation
Music publishers sue Roblox for copyright infringement over unlicensed songs in the gaming platform.
- Closedfor plaintiffN.D. Cal.2018-12-20Blizzard Entertainment, Inc. v. Lilith Games (Shanghai) Co. Ltd.
Valve Corporation and Blizzard Entertainment sued Lilith Games and related entities for copyright infringement. The case involves alleged unauthorized copying of copyrighted material, though the specific work at issue is not detailed in the available court records. The defendants include Lilith Games' parent companies and affiliated entities.
- Closedfor plaintiffC.D. Cal.2018-09-06James Steven Rosenfield v. Runyon Group, LLC
Atlas Capital Group and James Steven Rosenfield are suing Runyon Group, LLC for trademark infringement under the Lanham Act. The plaintiffs allege the defendant unlawfully used or imitated their trademark. The case involves federal trademark protection and potential damages for unauthorized use of the protected mark.
- Closedfor defendantN.D. Cal.2013-02-05Joao Control and Monitoring Systems of California LLC v. Sling Media, Inc.
Joao Control and Monitoring Systems of California LLC and BMW of North America sued multiple defendants including Honeywell, Sling Media, UTC Fire and Security, and others for patent infringement. The case involves a patent related to control and monitoring systems, likely covering vehicle or security monitoring technology. The lawsuit targets companies across automotive, security, and surveillance sectors.
- Closedfor plaintiffC.D. Cal.2012-04-26Perfect 10 Inc v. Google Inc
Perfect 10, an adult content publisher, is suing Google for copyright infringement over Google's indexing and display of Perfect 10's copyrighted photographs in Google Images search results. The case challenges whether Google's thumbnail images and cached versions of Perfect 10's works constitute fair use or infringing reproduction.
- Closedfor plaintiffC.D. Cal.2003-10-07UMG Recordings Inc v. Chris Larson
UMG Recordings and major record labels including Sony Music, Warner Bros Records, Capitol Records, and Arista Records sued Chris Larson for copyright infringement. The case involves unauthorized use of recorded music, with the major recording companies seeking damages for violations of federal copyright law.
Counsel sourced from public CourtListener docket records; firm names are normalized across spellings and office locations. Appearing for a party is not an endorsement of any position.