Defendant

Corel Software, LLC

1 case as defendant.

Also appears as a plaintiff in 1 case View as plaintiff

Company profile

Company Overview
Corel Corporation is a long-standing software company founded in 1985 and headquartered in Ottawa, Ontario, Canada. In September 2022, the company was rebranded to Alludo, but this name was later abandoned. Following a 2019 acquisition by the investment firm KKR, the company announced in February 2026 that it would separate into two independent entities. This transaction was completed in May 2026, relaunching Corel as a private, independent company focused on its creativity and productivity software portfolio, now owned by the private equity firm Vector Capital. The virtualization software business, Parallels, remains under KKR's ownership. Financial details and a precise post-separation employee count for the new Corel entity have not been publicly disclosed.

Products and Services
Corel is an operating company that develops and sells a well-known portfolio of software for creative, professional, and productivity tasks. Its flagship product lines include CorelDRAW Graphics Suite, a professional vector illustration and photo-editing package, and the WordPerfect Office suite for word processing and other office tasks. The company's portfolio also features popular software brands acquired over the years, including WinZip for file compression, MindManager for information visualization, PaintShop Pro for photo editing, and VideoStudio, Pinnacle, and Roxio for video editing and disc authoring.

Patent-Litigation Posture
Based on the provided data, Corel is an active, two-way litigant, acting as both a plaintiff and a defendant. The company has initiated patent enforcement actions while also defending against infringement claims and challenging patent validity at the administrative level. With two plaintiff cases and one defendant case tracked, Corel appears willing to leverage its patent portfolio offensively, characteristic of an operating company protecting its technology, rather than a non-practicing entity (NPE) focused solely on assertion. The litigation is spread across federal district and appellate courts as well as the Patent Trial and Appeal Board (PTAB), indicating a broad-based litigation strategy rather than a focus on specific plaintiff-friendly venues.

Notable Cases and Context
The most prominent litigation in the database is the long-running dispute between Corel Software, LLC and Microsoft Corporation, initiated by Corel in the District of Utah in 2015. Corel alleged that features in Microsoft Office infringed its patents related to a "RealTime preview" function from its WordPerfect software. The case also saw Microsoft challenge Corel's patents at the PTAB. In September 2025, the district court granted summary judgment in favor of Microsoft, finding Corel's asserted patent claims to be invalid. Corel subsequently filed an appeal. Another tracked case is a 2026 action filed by Corel against the U.S. Patent and Trademark Office at the Court of Appeals for the Federal Circuit; no further public details on the substance of this case are available.

Microsoft Corporation v. Corel Software, LLC

Claims Canceled
Docket:
IPR2016-01085, IPR2016-01086
Patents:8700996

Microsoft challenged the validity of the '996 patent through inter partes review (IPR) at the PTAB. In response to the PTAB instituting the review, Corel canceled all of the asserted claims of the patent that were under review.