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Matthew A. Karambelas


[email protected]



Matthew Karambelas is an experienced patent litigator who has represented clients and organized trial teams in cases spanning several Investigations at the U.S. International Trade Commission, cases in the U.S. District Courts, and appeals before the U.S. Court of Appeals for the Federal Circuit.  Matthew’s clients are focused on technologies ranging from high tech and software, to life sciences and medical products. He has recently worked on cases for clients with patents in semiconductor manufacturing, microbiology and genetic engineering, graphics processing, telecommunications, medical-quality flocked swabs, and health care information systems. In the past year, he has played key roles on cases at the International Trade Commission to successfully enforce patents for microbiology companies developing unique methods of producing beneficial oligosaccharides, and for semiconductor companies like GlobalFoundries, against the largest semiconductor foundry in the world.  In addition, Mr. Karambelas has significant experience in evaluating patent portfolios, offering clients useful advice on assessment and valuation of key aspects of their U.S. patent holdings.

During law school, Matthew served a judicial intern for the Hon. Dennis J. Curran of the Massachusetts Superior Court. In that role, he assisted the management of both the Judge’s civil session as well as the Judge’s pilot program on the effectiveness of mediation.


International Trade Commission

  • Certain Video Processing Devices, Components Thereof, and Digital Smart Televisions Containing the Same (II) (337-TA-1297) - Represented DivX, a video codec company headquartered in San Diego, in enforcing patents before the ITC and in the District of Delaware against Respondent TCL. The asserted patents involve innovations relating to internet video and streaming media, and in the ITC action, Amazon has moved to participate as an Intervenor. These additional filings, in addition to the original filings, and related negotiations resulted in TCL and DivX signing an IP licensing agreement which resolved all pending litigations.
  • Certain Video Processing Devices, Components Thereof, and Digital Smart Televisions Containing the Same (337-TA-1222) – Represented DivX, a video codec company headquartered in San Diego, in enforcing patents before the ITC in the District of Delaware. The asserted patents involve innovations relating to digital rights management and streaming media. LG and Samsung settled after the Markman order was issued, leaving TCL as the sole remaining respondent. Shortly after the seven day evidentiary hearing held in July 2021, one of the two principal suppliers of the accused streaming technology to TCL, namely Roku, stepped in and took a license to DivX’s portfolio, thus partially resolving DivX’s claims against TCL. Prior to the court issuing a decision on the merits, DivX and TCL entered into a bilateral settlement agreement resolving DivX’s remaining claims against TCl and bringing an end to all pending litigation.
  • Certain Human Milk Oligosaccharides and Methods of Producing the Same (337-TA-1120) - Represented Complainant Glycosyn LLC against Respondent Jennewein Biotechnologie GmbH, a large global competitor, at the International Trade Commission, involving an evidentiary hearing before an Administrative Law Judge. Glycoysn’s innovative method of manufacturing a key beneficial ingredient in infant formula, 2'-fucosyllactose oligosaccharides, was found by the Commission to be infringed by Jennewein’s manufacturing method. The Commission issued a Limited Exclusion Order against Jennewein’s infringing 2'-fucosyllactose oligosaccharides following review of the ALJ’s finding of a violation. Matthew’s experience in Glycosyn’s ITC Investigation involved day-to-day management of the case, overseeing expert testing of enzyme activity in Germany, and taking live direct and cross-examination of witnesses at trial.
  • Certain Semiconductor Devices, Products Containing the Same, and Components Thereof (II) (337-TA-1177) - Represented GlobalFoundries as lead counsel at the International Trade Commission and in multiple Western District of Texas actions, involving the direct and indirect infringement of four patents related to semiconductor devices, integrated circuits, and products containing the same. Additional defendants in these actions included Apple, Broadcom, Cisco, nVidia, Arista, Asus, and Lenovo. Within 2.5 months of filing at the ITC, the cases settled on favorable terms.
  • Certain Semiconductor Devices, Integrated Circuits, and Consumer Products Containing the Same (337-TA-1149) – Mintz represented Innovative Foundry Technologies as part of a global enforcement strategy to protect 5 asserted patents relating to semiconductor fabrication and packaging. Respondents for the ITC matter included Taiwan Semiconductor Manufacturing Company, Qualcomm Incorporated, MediaTek, and Vizio. Cases were simultaneously filed in U.S. District Court and internationally in Germany and China. The investigation was instituted in March of 2019 and resolved favorably prior to the conclusion of discovery in August of 2019.
  • Certain Graphics Systems, Components Thereof, and Consumer Products Containing the Same (337-TA-1044) – Represented Advanced Micro Devices (AMD) as complainant in the ITC asserting patents covering graphics processing technology employed by smart devices such as televisions and handsets. Respondents include LG Electronics, VIZIO, MediaTek, and Sigma Designs, Inc. (SDI). Achieved settlement with LG prior to the conclusion of expert discovery. Following the evidentiary hearing, the presiding ALJ issued an initial determination finding a violation of Section 337 and recommending the imposition of an exclusion order against the remaining Respondents’ accused products. The ITC affirmed the ALJ’s finding of a violation on August 22, 2018. As a result, the Commission issued orders banning the importation of products made by VIZIO, MediaTek, and SDI and cease and desist orders against VIZIO and SDI.
  • Certain Communications or Computing Devices and Components Thereof (337-TA-925) – Represented owner of portfolio of communications and computing patents from former enterprise communications business unit of large multinational innovation company, Enterprise System Technologies, S.A.R.L. An ITC investigation was instituted in August 2014 as to respondent entities Apple, Samsung Electronics, LG Electronics and HTC Corporation. Google participated as an intervenor. The investigation resolved prior to evidentiary hearing in June of 2015.
  • Certain Consumer Electronics with Display and Processing Capabilities (337-TA-884) - Represented owners of the patent portfolio of the original Silicon Graphics, now known as Graphics Properties Holdings, as complainant in the ITC. Investigation was instituted in June 2013 and among the respondent entities were Panasonic, Toshiba, Vizio, and ZTE. Most respondents settled. After an evidentiary hearing held over several days in May 2014, on August 29, 2014 Mintz successfully obtained a recommendation for a Limited Exclusion Order against the remaining respondent, which chose to settle while Commission review of the Administrative Law Judge’s Initial Determination was pending.

Federal District Court

  • Preservation Wellness Technologies, LLC v. NextGen Healthcare Information Systems, LLC, 2:15-cv-01562 (E.D. Tex) – Successfully defended NextGen, obtaining dismissal of the complaint after oral argument. With U.S. Federal Circuit Judge William Bryson presiding over the case, the court held that the patent at issue was not patent-eligible under the U.S. Supreme Court’s Alice decision. Mintz also represented NextGen on appeal to the Federal Circuit and the decision was upheld.

Pro Bono

  • Represents immigration clients seeking asylum protection in the United States from countries in Asia and South America.
  • Received fully favorable appeal decision from the Social Security Administration’s Office of Disability Adjudication and Review for a claimant with mental health disabilities including depression and PTSD, overturning the SSA’s Initial Determination denying the claimant any benefits.
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SCOTUS Declines to Answer Calls for Clarification in American Axle v. Neapco

July 13, 2022 | Blog | By Brad M Scheller, Andrew DeVoogd, Matthew Karambelas, Amanda Metell

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The Federal Circuit recently provided strategic guidance for defending software claims against Alice challenges that claims recite ineligible patent subject matter under 35 U.S.C. § 101. In Mentone Solutions LLC v. Digi International Inc., defendants alleged that representative claim 5 of U.S. Patent No. 6,952,413, directed towards allocating data channels using shifted uplink status flags in cellular mobile stations, claimed only an abstract idea. The District Court agreed and dismissed. On appeal, the Federal Circuit reversed, holding that claim 5 is not directed to an abstract idea because the claim improved the functionality of a computer.
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When It Isn’t Better Late Than Never: ALJ Reins in on Redesigns First Disclosed in the Last Week of Fact Discovery

September 21, 2021 | Blog | By Michael Renaud, Adam Rizk, Matthew Karambelas, Tianyi Tan

In a recent IAM article, Levelling the playing field in ITC patent cases by identifying redesigns to a set deadline, we commented on best practices for ITC complainants to protect their interests against the nascent uptick of redesign submissions at the tail end of fact discovery. Although reasonable minds can differ as to whether the uptick in motion practice is coincidence or a more troubling sign that some respondents are using late redesign disclosures as a vehicle to put complainants at a disadvantage in fast-paced Section 337 proceedings, such late disclosures undoubtedly prejudice complainants’ ability to fully review and assess such disclosures for possible infringement.
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Federal Circuit: Licensees’ Failure to Mark Eliminates Entitlement to Pre-Suit Damages

July 27, 2020 | Blog | By Adam Samansky, Peter Cuomo, Matthew Karambelas, Courtney Herndon

Recently, in Packet Intelligence LLC v. NetScout Sys., Inc., No 19-2041 (July 14, 2020), the Court of Appeals for the Federal Circuit reversed a jury verdict of $3.5 million in pre-suit damages and vacated the trial court’s enhancement of that award because licensees of the asserted patents failed to properly mark allegedly patent practicing products.
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Mintz is recognized as among the top ten firms in ITC Section 337 litigation by Patexia in its inaugural "ITC Intelligence Report". We are pleased to be among the firms included in this publication and thrilled that it has come on the heels of a great year at the ITC for the Mintz team.
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In a recent decision clarifying the legal standards of the International Trade Commission’s domestic industry requirement, the Commission has upheld, with modified reasoning, Chief Administrative Law Judge Bullock’s initial determination (“ID”), finding no domestic industry in Certain Carburetors and Products Containing Such Carburetors, Inv. No. 337-TA-1123, Comm’n Op. (Oct. 28, 2019). 
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ITC suggests 5% Threshold for Domestic Industry Assessment; order may impact tech companies

September 23, 2019 | Blog | By Michael Renaud, Andrew DeVoogd, Matthew Karambelas, Nana Liu

Recently, Chief Administrative Law Judge (“CALJ”) Bullock of the U.S. International Trade Commission (“ITC”), in Certain Carburetors and Products Containing Such Carburetors, Inv. No. 337-TA-1123, Order No. 77, suggested that “significant” or “substantial” domestic industry investments must amount to greater than 5% of domestic industry product sales in the United States. 
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Recently, the District of Delaware held that a there was no work-product protection, and no common legal interest protection covering communications and documents shared between a patent owner and a third-party litigation financier, where the exchange occurred prior to any written agreement signed between the two parties and prior to the filing of any litigation.
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Software is Still Patent Eligible

February 16, 2017 | Advisory | By Michael Van Loy, Michael Renaud, Sandra Badin, Matthew Karambelas, Nicholas Mouton

In recent years, software patents have come under fire from legislation (the American Invents Act) that has generally made patents easier to invalidate, and from court decisions (the Supreme Court’s decision in Alice v. CLS Bank1 and its progeny) that have made computer-implemented inventions more vulnerable to subject matter eligibility challenges.
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Yesterday, the Supreme Court held that the relevant “article of manufacture” for arriving at a damages award for design patent infringement need not be the end product sold to the consumer, but may be only a component of that product.
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News & Press

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BOSTON – Mintz has been recognized as one of the most active and high-performing International Trade Commission (ITC) law firms in the Patexia 2023 ITC Intelligence Report.
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Mintz Member and Intellectual Property Chair Michael T. Renaud and Associate Matthew Karambelas co-authored the USA chapter of the International Comparative Legal Guide – Patents 2023 which focused on developments in the U.S. patent market and what changes are expected in the year to come.
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Mintz Member and Chair of the Firm’s Intellectual Property Division Michael Renaud, Member Adam Rizk, and Associate Matthew Karambelas co-authored an article published by IAM on adjudicating redesigns at the International Trade Commission including best practices for complainants managing discovery of redesigns.
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Law360 reported that the U.S. Court of Appeals for the Federal Circuit recently upheld the International Trade Commission's finding that a pair of bacteria strains used by German-based Jennewein infringed a Glycosyn milk patent. The article included a quote from Mintz Intellectual Property Member Michael Newman, noting that, in addition to Mr. Newman, Glycosyn was represented by Member and Chair of the firm's Intellectual Property Division Michael Renaud, Members Thomas Wintner and James Wodarski, and Associates Courtney Herndon and Matthew Karambelas.
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Mintz Member and Chair of the firm’s Intellectual Property Division Michael Renaud and Associate Matthew Karambelas co-authored the United States chapter of the twelfth edition of International Comparative Legal Guide’s Patent Laws and Regulations 2022. The chapter examined common issues in patent laws and regulations, including patent enforcement, patent amendment, licensing, and more, and provided a look ahead at how patent law is expected to evolve in the coming year.
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Law360 reported that Mintz client American video codec company DivX, an early innovator in the digital streaming video and digital rights management scene, has reached confidential settlements with LG and Samsung, resolving international litigation claiming they infringe DivX’s streaming patents with their smart televisions. The Mintz team representing DivX is led by Member and Chair of the firm’s Intellectual Property Division Michael Renaud and Member Adam Rizk and includes Member and Chair of the firm’s Intellectual Property Litigation Practice Matthew Hurley, Members Keith Carroll, Marguerite McConihe, Michael McNamara, Samuel Davenport, and Daniel Weinger, and Associates Matthew Karambelas, Jessica Perry, and Nana Liu.
In this column, Mintz attorneys James Wodarski, Andrew DeVoogd, Daniel Weinger, and Matthew Karambelas analyze the decision made by the ITC about patent claims that have been negated by Alice Corp v. CLS Bank International in the 100-Day Pilot Program.
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Recognition & Awards

  • Managing Intellectual Property: Rising Star (2021-2022)
  • Ranked 17th by Patexia among the Most Active ITC Attorneys Representing Complainants (2023)
  •  Ranked 11th by Patexia among the Best Performing ITC Attorneys Representing Complainants (2023)
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