Matthew J.Silveira (Matt)


三藩市 + 1.415.875.5715

Matt Silveira focuses his practice on complex civil litigation in federal and state courts, where he primarily handles legal strategy, dispositive motions, and appeals. He has experience across a wide range of industries and subject matters, including financial markets, antitrust, intellectual property, technology, life sciences, health care, and labor and employment.

Matt has led teams in courts around the country, including in California, New York, and the Ninth and Federal Circuits. He has successfully briefed and argued motions after trial, at the pleading stage, on summary judgment, in arbitration proceedings, and in connection with requests for injunctive relief, in addition to extensive experience with appeals and writ petitions. Representative engagements include: obtaining dismissal of a California False Claims Act complaint against several financial institutions serving as remarketing agents of variable-rate municipal bonds; securing the dismissal of a series of market manipulation and consumer fraud lawsuits filed against a cryptocurrency derivatives trading platform in California state and federal courts; obtaining and successfully defending on appeal a summary judgment of noninfringement for a semiconductor component manufacturer; securing and enforcing an arbitration award forcing a union to withdraw a statewide ballot initiative limiting hospital executive compensation; and representing several hospitals in challenges to union-backed local initiatives seeking to cap the compensation that health care providers may receive from insurers.

Matt also maintains a varied pro bono practice, including the representation of civil rights plaintiffs in the federal courts and immigration clients in proceedings before the Ninth Circuit and the Board of Immigration Appeals.


  • California Hospital Association wins summary judgment in labor law and health care caseJones Day secured a major win for the California Hospital Association (CHA) in a matter that has significant ramifications for labor law and the health care industry.
  • NXP defends multi-jurisdiction patent infringement suits involving RFID technologyJones Day represented NXP USA Inc. against a competitor in a global patent infringement dispute involving more than 50 patents.
  • Micron Technology asserts trade secret and RICO claims, establishes U.S. jurisdiction over foreign defendants under DTSAJones Day represented Micron Technology, Inc. as a plaintiff in a trade secret and RICO lawsuit against Taiwanese and Chinese entities accused of theft of Micron's semiconductor processing technology.
  • Merck wins bench trial over patent term extension issue in Hatch-Waxman multi-party dispute involving BRIDION®Jones Day is representing Merck Sharp & Dohme, B.V. in Hatch-Waxman patent infringement actions originally against 16 generic drug maker defendant groups, relating to the defendant groups' submissions of Abbreviated New Drug Applications (ANDA) to the FDA seeking approval of generic versions of BRIDION®, a first-in-class agent for the reversal of certain types of neuromuscular blockade induced in adults undergoing surgery.
  • Chemtronics defends infringement claims and challenges asserted patents involving touch screen technologyJones Day is defending Chemtronics Co., Ltd. against a competitor in a patent infringement case in the Eastern District of Texas.
  • Global financial institution defends claims in VRDO mattersJones Day is defending a global financial institution in several matters related to its activities as remarketing agent for variable rate demand obligations (“VRDOs”) issued by agencies or units of state and local government.
  • Sutter Health wins complete defense verdict in landmark antitrust class actionJones Day won a complete defense jury verdict for Sutter Health in a landmark antitrust class action seeking $1.2 billion in treble damages.
  • HDR Global Trading obtains dismissal with prejudice in 33-count lawsuitJones Day client HDR Global Trading Limited ("HDR"), the Seychelles-incorporated owner and operator of the BitMEX cryptocurrency derivatives trading platform, obtained dismissal with prejudice of a 33-count lawsuit alleging violations of the Commodity Exchange Act, RICO, and various California statutory and common law claims.
  • Large regional property manager sells $1 billion portfolio of 27 multifamily propertiesJones Day represented a large regional property manager in its $1 billion sale of a portfolio of 27 multifamily properties consisting of over 500 buildings and close to 8,000 units.
  • PI Advanced Materials obtains CAFC affirmance of summary judgment win in patent case regarding polyimide filmsJones Day successfully obtained a Federal Circuit affirmance of a summary judgment win of non-infringement on behalf of PI Advanced Materials Co., Ltd. ("PIAM", formerly SKC Kolon PI, Inc. ("SKPI")).
  • Xilinx defends against patent claims by Japanese sovereign patent fund IP BridgeJones Day represented Xilinx Inc., the industry leader in field programmable gate arrays, in its patent dispute with Godo Kaisha IP Bridge 1 ("IP Bridge"), a Japanese sovereign patent fund that holds approximately 800 patents and attempts to generate revenues by enforcing patents against U.S. operating companies.
  • Sherwin-Williams defends lead paint actions brought by California cities and countiesJones Day is defending The Sherwin-Williams Company against claims brought by ten of California's largest cities and counties.
  • Adocia prevails in biopharma license agreement dispute in international arbitrationJones Day won a binding arbitration award for French biopharmaceutical company, Adocia S.A., in a license agreement dispute against Eli Lilly and Company.
  • HP obtains writ of mandamus in patent litigationOn behalf of HP Inc., Jones Day obtained a rare writ of mandamus from the Federal Circuit ordering Judge Schroeder from the Eastern District of Texas to transfer a patent litigation involving Google Chrome products to the Northern District of California.
  • Synopsys reaches agreement with Mentor Graphics in competitor patent caseJones Day served as lead trial counsel for Synopsys Inc. in competitor patent litigation against Mentor Graphics Corporation following the Federal Circuit’s remand of the case to the district court.
  • H&R Block defeats patent infringement case brought by UnilocJones Day successfully defended H&R Block, Inc. in a multi-patent infringement lawsuit brought by Uniloc USA, Inc.
  • Xilinx proves unpatentability of third party patent claims in USPTO IPR and at Federal CircuitJones Day successfully represented Xilinx, Inc. in defending patent claims asserted by PLL Technologies, Inc. in the District of Delaware as well as before the Patent Trial and Appeal Board (PTAB) in an inter partes review (IPR) challenge to the patent and on the subsequent appeal to the Federal Circuit.
  • Xilinx obtains Federal Circuit decisions affirming dismissal under Alice and setting personal jurisdiction precedentJones Day represented Xilinx, Inc. in multiple venues against patent infringement assertions relating to integrated circuit testing technology.
  • Synopsys obtains reversal of PTAB unpatentability decisionJones Day obtained a rare reversal of the PTAB on behalf of Synopsys, Inc. in its ongoing battle with ATopTech, Inc.
  • Millennium Laboratories wins Ninth Circuit reversal in trade dress and unfair competition litigationJones Day won a reversal of summary judgment for Millennium Laboratories, Inc. in a Ninth Circuit appeal of a trade dress and unfair competition dispute.