Heungsoo Choi

With more than 24 years of experience in US IP laws and over four years of experience in Korean patent law, Heungsoo is skilled in taking challenging patents that are languishing at the USPTO and getting them allowed quickly. Heungsoo excels in succeeding where other IP lawyers have failed. One of his clients, who benefited from Heungsoo’s skills, said: “Client invention + Heungsoo = Patent.”

Heungsoo was named among best lawyers by “The Best Lawyers in America” (One to Watch category) in 2021 – 2025.

His practice is focused on strategic patent procurement with a strong emphasis on strategic claim drafting for quick allowance (frequently combined with faster track examination) and USPTO examiner interviews, building and managing a complex patent portfolio (domestic and international), appeals to the PTAB, Ex Parte reexamination, broadening reissue, landscape analysis, due diligence, opinions, non-infringement and invalidity analysis, position paper, and sending and responding to cease and desist letters. Heungsoo has extensive international practice, including Asia and Europe. He regularly visits Korea and gives presentations regarding U.S. intellectual property matters. Heungsoo also has experience in reviewing and revising IP agreements such as non-disclosure agreements, consulting agreements, manufacturing agreements, supply agreements, joint development agreements, software development agreements and licensing agreements.

He also has experience in filing and prosecuting trademark applications and preparing and/or reviewing trademark license agreements.

Heungsoo also coordinated managing multiple state court litigations relating to breach of contract and copyright infringement involving consumer electrical devices and computer software.

He currently represents clients ranging from Fortune 500 companies to start-up companies (he is currently working with many startups). He has experience and knowledge in a wide range of technologies including: electrical, telecommunication, computer (hardware/software), semiconductor and medical devices. Specifically, Heungsoo has experience in variety of technologies including (but not limited to):

• Artificial intelligence (AI) (machine learning/deep learning/generative AI) – see below various AI technologies
• Various medical device and related technologies
  • Medical image analysis using AI
  • AI based health management system
  • AI based virtual medical assistant
  • Robotic surgery system
  • Cryo-anesthesia device
  • Glucose monitoring technology
  • Electrotherapy system
  • Needleless syringe using pyrotechnic mechanism
  • Smart braille devices for the visually impaired
  • Vibratory nerve exciter
  • Tracheostomy tube
  • Humidifier for use in respiratory care, acute care surgery and the treatment of obstructive sleep apnea.
  • Catheter
  • Wearable device such as smart watch
  • Spinal nerve ablation technology
  • Ultrasound image processing system
  • AI based ultrasound image processing system
• Automotive
  • Electrical vehicle
  • Autonomous driving technology
  • AI based pedestrian-to-vehicle collision avoidance system
  • Electric power steering system for vehicles
  • Advanced driver assistance system (ADAS)
  • Vehicle suspension system
• Various computer software technologies
  • User-participating-type AI training service using generative AI
  • Computer based personalized delivery of various content including audio and video files
  • Data/image processing using AI
  • AI based data analytical processing
  • On-line education system
  • Natural language response technology
  • Distributed software-defined network (DSDN)
• Wireless and telecommunication technologies
  • Wireless power charging system
  • Wireless power overvoltage protection circuit
  • Bluetooth
  • Wireless LAN
  • Satellite communication system
  • Push-to-talk based radio frequency communication system
  • Wireless high-definition video system
• Energy storage devices
  • Capacitor
  • Secondary battery
  • Fuel cell
  • Solar cell
• Display technology
  • Augmented reality (AR) and Virtual reality (VR)
  • Plasma panel display
  • Liquid Crystal Display (LCD)
  • Organic Light Emitting Diode (OLED) display
  • Quantum dots display
  • Stereoscopic display
  • Digital/Internet TV
• Data storage system
  • Solid state drive (SSD)
  • Magnetic storage device
  • Optical storage device such as CD/DVD
• Semiconductor manufacturing
  • Thin film deposition technology such as atomic layer deposition
  • Substrate inspection system
• Sensing system
  • LIDAR (light detection and ranging) system
  • Gesture recognition system
  • Pressure sensor array
  • Piezoelectric sensor
• Other electrical and computer technologies
  • Quantum computation technology
  • Internet of Things (IoT) system
  • Multi-function peripheral device
  • Electronic payment system based on barcode
  • Various electrical components
  • PWM amplifier systems.
  • Exercise/workout guide system
• Tamper-resistant datalink (drone) communication system
• Razor (shaving device) technology

Prior to joining the firm, Heungsoo worked as a Korean Patent Attorney in one of the largest Korean IP firms for over four years, where he prosecuted numerous patent applications relating to the digital media, signal processing and consumer electronics for the largest Korean technology company. He was also the chief of an electrical patent department of the Korean firm where he handled various fields of technologies including electrical, computer, software, Internet, data processing, computer networks, telecommunications, and business method patents.

Below are Heungsoo’s selected accomplishments that helped patent owners/practicing entities:

• Assisted with building a large patent portfolio for world’s largest flat panel display manufacturer and the world leader in secondary battery technology
• Lead U.S. counsel for the world-leading research institute in the world’s most cutting-edge industry
• Assisted a medical device company regarding comprehensive landscape analysis for strategic acquisition in spinal nerve ablation technology
• Assisted a world leading healthcare company in non-infringement/invalidity analysis of competitor’s patent
• Assisting a world class energy storage device manufacturer in building U.S. patent portfolio
• Assisting a large medical device company in building U.S. patent portfolio
• Assisting multiple start-ups and small sized companies in building U.S. and worldwide IP portfolios