Defendant
12 cases as defendant.
Company overview. Flexiworld Technologies, Inc. ("Flexiworld") is a privately held, founder-led company founded in 2001 and headquartered in Portland, Oregon (3439 NE Sandy Blvd., Suite 267). Founder William Ho Chang leads the company, which PitchBook lists as formerly VC-backed with roughly $1.5M raised; it is not publicly traded and has no corporate parent. Public estimates put it at about 5 employees and roughly $3M in annual revenue, though these figures are estimates (Kona Equity) and unverified by the company.
Products / operations. Flexiworld was founded to develop "FlexiCore," a wireless-software infrastructure enabling mobile devices to print to any brand of printer, drive wireless presentations, transfer data, and make VoIP calls. Today it operates essentially as a patent-licensing company: in its 2022 litigation against Lexmark, Flexiworld stated it "has not made, offered for sale, sold, or imported a product that practices any of the Patents-in-Suit." Its portfolio is roughly 72 granted U.S. patents (per PitchBook) covering wireless printing, driverless output, device discovery, and wireless streaming of digital content to TVs, speakers, and other output devices.
Patent-litigation posture. Flexiworld is a pure plaintiff/NPE: all three tracked cases list it as plaintiff (3) and none as defendant, and every one was filed in the Eastern District of Texas (Marshall Division) before Judge Rodney Gilstrap — a venue widely regarded as plaintiff-friendly. Unified Patents, RPX, and Stanford's NPE Litigation Database all characterize Flexiworld as a non-practicing entity. RPX describes an ongoing campaign begun around June 2020 in which Flexiworld has asserted roughly 40 wireless-connectivity and streaming patents against consumer-electronics and printer OEMs.
Notable cases. The tracked matters are Flexiworld v. LG Electronics (filed Sept. 18, 2025, asserting six patents covering smart TVs, soundbars, and remotes; a settlement notice was filed in March 2026) and Flexiworld v. Sony Corporation (filed Dec. 19, 2023; dismissed with prejudice in 2024). Related untracked suits include actions against TCL (March 2026), Roku, Hisense, HP, Xerox, Brother, and Lexmark. Unified Patents has challenged several Flexiworld patents; the PTAB upheld claims of U.S. Patent 9,836,257 in IPR2022-00775, while other patents faced reexamination rejections.
Lexmark filed an inter partes review against Flexiworld's '233 patent. Institution decision issued November 14, 2023; the proceeding terminated settled on January 26, 2024.
Lexmark petitioned for inter partes review of the '402 patent. The PTAB denied institution on November 17, 2023, so no merits finding on validity was made.
Roku filed an IPR petition against the '257 patent. The proceeding was terminated pre-institution pursuant to a joint motion based on the parties' Patent License Agreement, which also resolved the W.D. Tex. litigation.
Roku petitioned for inter partes review of claims 17-25 and 39-44 of the '822 patent on obviousness grounds. The proceeding was terminated after the parties settled before institution of trial.
Roku petitioned for inter partes review challenging claims 1–14 and 23–25 of U.S. Patent No. 7,944,577. The parties filed a joint motion to terminate and the Board issued a settlement termination decision on October 31, 2022.
Roku petitioned for inter partes review of claims 1-20 of US 10,140,073. The proceeding was terminated as settled on 2022-10-31 before institution, with the settlement agreement treated as business confidential.
Roku filed an inter partes review against Flexiworld's '233 patent. The proceeding was terminated on October 31, 2022, after settlement in parallel with the Roku license agreement.
Unified Patents petitioned for inter partes review of claims 27 and 28 of the '257 patent. The PTAB granted institution, then determined Unified Patents failed to prove the challenged claims unpatentable and dismissed the patent owner's contingent motion to amend.
Roku filed a petition for post-grant review of U.S. Patent No. 11,029,903. The PTAB instituted review on written description and § 101 grounds. The proceeding was terminated on October 31, 2022, following a Patent License Agreement between Roku and Flexiworld.
Roku petitioned for inter partes review of Flexiworld's '064 patent, challenging claims 1–10, 12, and 14–20. The Board issued a mixed final written decision on October 21, 2022, holding claims 1–10, 12, and 14 unpatentable and claims 15–20 not shown unpatentable.
Roku petitioned for inter partes review of U.S. Patent No. 10,740,066 B2. The Board instituted on Ground 2 but rejected Ground 3 and found Yamaguchi was not prior art on Ground 1; the case proceeded to oral hearing on July 19, 2022, and reached a Final Written Decision, but the outcome is not confirmed in the narrative.
PTAB inter partes review proceeding listed by Google Patents as involving US 10,346,114, with Roku, Inc. as petitioner and Flexiworld Technologies, Inc. as patent owner; it terminated by settlement. The exact challenged claims/patent could not be independently confirmed from a primary source.