Waring v. Synopsys, Inc.
Filed: April 9, 2026 as 4:2026cv03068
Court: California Northern District Court
Defendant: Synopsys, Inc.
Plaintiff: Diana Waring
Nature of Suit: Other Contract
Butter v. Synopsys, Inc.
Filed: April 7, 2026 as 3:2026cv03006
Court: California Northern District Court
Defendant: Synopsys, Inc.
Plaintiff: Matthew Butter
Nature of Suit: Other Personal Injury
Wong v. Synopsys, Inc.
Filed: April 6, 2026 as 3:2026cv02946
Court: California Northern District Court
Defendant: Synopsys, Inc.
Plaintiff: Jeron Wong
Nature of Suit: Other Personal Property Damage
Krishnamurthy v. Synopsys, Inc.
Filed: April 6, 2026 as 5:2026cv02943
Court: California Northern District Court
Defendant: Synopsys, Inc.
Plaintiff: Balachander Krishnamurthy
Nature of Suit: Other Personal Injury
Synopsys, Inc. v. Black Sesame Technologies, Inc. et al
Filed: January 5, 2026 as 5:2026cv00078
Court: California Northern District Court
Defendant: Black Sesame Technologies, Inc., Black Sesame Technologies, Co., Ltd.
Plaintiff: Synopsys, Inc.
Nature of Suit: Copyrights
City of Sterling Heights Police & Fire Retirement System v. Synopsys, Inc. et al
Filed: December 30, 2025 as 3:2025cv11059
Court: California Northern District Court
Defendant: Synopsys, Inc., Sassine Ghazi, Shelagh Glaser, Sudhindra Kankanwadi, Aart J. de Geus, Luis Borgen, Marc N. Casper, Janice D. Chaffin, Bruce R. Chizen, Mercedes Johnson, Robert G. Painter, Jeannine P. Sargent, John G. Schwarz, Roy Vallee
Petitioner: Boston Retirement System, New England Teamsters Pension Fund
Plaintiff: City of Sterling Heights Police & Fire Retirement System
Nature of Suit: Securities/Commodities/Exchanges
Mangalmurti v. Synopsys, Inc.
Filed: December 15, 2025 as 5:2025cv10694
Court: California Northern District Court
Defendant: Synopsys, Inc.
Plaintiff: Shruti Mangalmurti
Nature of Suit: Employment
Synopsys, Inc. v. Real Intent, Inc.
Filed: December 4, 2025 as 5:2025cv10399
Court: California Northern District Court
Defendant: Real Intent, Inc.
Plaintiff: Synopsys, Inc.
Nature of Suit: Patent
New England Teamsters Pension Fund v. Synopsys, Inc. et al
Filed: November 25, 2025 as 5:2025cv10201
Court: California Northern District Court
Defendant: Synopsys, Inc., Sassine Ghazi, Shelagh Glaser, Sudhindra Kankanwadi, Aart J. de Geus, Luis Borgen, Marc N. Casper, Janice D. Chaffin, Bruce R. Chizen, Mercedes Johnson, Robert G. Painter, Jeannine P. Sargent, John G. Schwarz, Roy Vallee
Petitioner: Boston Retirement System
Plaintiff: New England Teamsters Pension Fund, Brian Taylor
Nature of Suit: Securities/Commodities/Exchanges
Kim v. Synopsys, Inc. et al
Filed: October 31, 2025 as 5:2025cv09410
Court: California Northern District Court
Defendant: Synopsys, Inc., Sassine Ghazi, Shelagh Glaser
Plaintiff: Hyungjoon Kim
Nature of Suit: Securities/Commodities/Exchanges
Synopsys, Inc. v. Real Intent, Inc.
Filed: September 24, 2025 as 25-2137
Court: U.S. Court of Appeals, Federal Circuit
Defendant: REAL INTENT, INC.
Plaintiff: SYNOPSYS, INC.
Nature of Suit: Copyrights
Synopsys, Inc. v. Feilke et al
Filed: May 30, 2025 as 5:2025cv04590
Court: California Northern District Court
Defendant: Karsten Feilke, Elnar Dakeshov
Plaintiff: Synopsys, Inc.
Nature of Suit: Recovery of Overpayment and Enforcement of Judgment
Synopsys, Inc. v. Real Intent, Inc.
Filed: March 25, 2025 as 1:2025cv00441
Court: Texas Western District Court
Defendant: Real Intent, Inc.
Plaintiff: Synopsys, Inc.
Nature of Suit: Patent
Synopsys, Inc. v. Real Intent, Inc.
Filed: March 21, 2025 as 1:2025cv00359
Court: Delaware District Court
Defendant: Real Intent, Inc.
Plaintiff: Synopsys, Inc.
Nature of Suit: Patent
Cangrade, Inc. v. Synopsys, Inc.
Filed: February 10, 2025 as 5:2025cv01381
Court: California Northern District Court
Defendant: Synopsys, Inc.
Plaintiff: Cangrade, Inc.
Synopsys, Inc. v. Universal Connectivity Technologies Inc.
Filed: December 19, 2024 as 4:2024mc80320
Court: California Northern District Court
Defendant: Universal Connectivity Technologies Inc.
Plaintiff: Synopsys, Inc.
Nature of Suit: Other Statutory Actions
Synopsys, Inc. v. Optical Systems Design LLC
Filed: December 6, 2024 as 2:2024cv10515
Court: California Central District Court
Defendant: Optical Systems Design LLC
Plaintiff: Synopsys, Inc.
Nature of Suit: Trademark
Synopsys, Inc. v. ICPillar LLC
Filed: September 17, 2024 as 5:2024mc80235
Court: California Northern District Court
Defendant: ICPillar LLC
Plaintiff: Synopsys, Inc.
Nature of Suit: Other Statutory Actions
Synopsys, Inc. v. GREENTHREAD, LLC
Filed: July 30, 2024 as 3:2024mc80190
Court: California Northern District Court
Defendant: GREENTHREAD, LLC
Plaintiff: Synopsys, Inc.
Nature of Suit: Other Statutory Actions
Synopsys, Inc. v. Sunlune Corporation
Filed: January 11, 2024 as 5:2024cv00220
Court: California Northern District Court
Defendant: Sunlune Corporation
Plaintiff: Synopsys, Inc.
Nature of Suit: Other Statutory Actions
