Stephanie M.Mishaga (Steph)


San Diego + 1.858.703.3140

Stephanie Mishaga is an intellectual property lawyer who handles patent and trademark prosecution and litigation. Her practice spans technical areas including artificial intelligence, bioinformatics, blockchain, semiconductor manufacturing and devices, data and digital signal processing, file and database management software, graphical user interfaces, software architectures, medical devices and patient monitoring systems, digital health, fitness equipment, on-board diagnostic (OBD) devices, and power control systems.

Steph drafts and prosecutes patent applications before the United States Patent and Trademark Office (USPTO). She performs freedom to operate and invalidity analyses. She has experience in patent and trade secret litigation-discovering evidence demonstrating software and source code misuse.

Steph has more than five years of industry experience in software testing and systems integration. As a former engineer at General Dynamics, Steph has substantial experience in combat systems weapon and sensor software development by integrating air/surface radars, guided missile systems, surface gun systems, and electronic weaponry detection systems. She spent significant time at sea, conducting software testing for the United States Navy. While working at Verizon Telematics, Steph designed OBD device software.

Steph's programming language experience includes Python, Linux, Matlab, Matlab Simulink, and Wireshark. Her software management system knowledge includes JIRA and IBM Rational Change. She took specialized academic courses in microelectronics, microelectronic circuit fabrication, dielectrics, integrated circuit simulations, and biomedical engineering.

Steph actively supports veterans of the United States Armed Forces through pro bono initiatives. She represents veterans appealing discharge characterizations and disability benefit decisions before the United States Department of Veterans Affairs.


  • Qualcomm defeats series of appellate writs by Apple in trade secret litigationJones Day represented Qualcomm Incorporated and Qualcomm Technologies, Inc. at the California Court of Appeal's Fourth District in opposing a series of three petitions for writ of mandate or prohibition brought by Apple Inc.
  • Qualcomm pursues trade secret and contract claims asserting Apple's misuse of Qualcomm's trade secret software and source codeJones Day represented Qualcomm Incorporated and Qualcomm Technologies, Inc. in a lawsuit asserting trade secret misappropriation and breach of contract claims against Apple Inc.
  • Sempra Energy develops patent portfolio directed to advanced electric grid technologiesJones Day is advising Sempra Energy and its subsidiary PXiSE Energy Solutions with the development of a patent portfolio directed to software and hardware solutions directed to improving the efficiency and efficacy of the electrical grid.
  • Cylance develops patent portfolio directed to advanced cybersecurity software utilizing machine learning / artificial intelligenceJones Day is advising Cylance Inc. with the development of a patent portfolio directed to advanced cybersecurity software utilizing machine learning / artificial intelligence.
  • SAP establishes diverse patent portfolio directed to software and database innovationsJones Day represents a leading enterprise software and database developer SAP SE in managing patent portfolios directed to diverse innovations including database technologies, mobility, UX, cloud computing, and big data.
  • Aerospace Corporation establishes cutting edge patent portfolio directed to diverse terrestrial and space innovationsJones Day represents The Aerospace Corporation in strategically developing its patent portfolio directed to diverse innovations including space and terrestrial communication systems and protocols, advanced sensors, optics, and related manufacturing processes.
  • Draeger establishes global patent portfolio directed to diverse medical devices and safety equipmentJones Day represents medical device manufacturer Draeger Medical Systems, Inc. in managing global patent portfolios relating to patient monitors (both hardware and related software), physiological sensors, incubators, and breathing apparatus.
  • ANSYS expands global intellectual property portfolioJones Day provides IP advice to ANSYS, Inc. and assists with the prosecution and management of its international patent portfolio related to engineering simulation for assisting the world's most innovative companies in delivering radically better products to their customers.
  • Speaking Engagements

    • August 2019
      Strategies for Protecting AI Innovations
    • July 2019
      Biopharma Meets AI - Potential IP Protection Strategies
    • June 2019
      IP Protection Trends in Artificial Intelligence
    • July 2018
      Artificial Intelligence Deployed in Medical Devices: Patent Strategies and Challenges
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