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River Sonic Solutions

Expert Witnessing and Technical Consulting in medical devices, signal processing and electronics

Expert Witnessing

Expert Witness Patents Medical Devices
Dr. Chris Daft specializes in providing litigation support with a focus on Patent and Trade Secret areas of intellectual property. He has been deposed 21 times and provided trial testimony 5 times. His expertise spans a range of technologies including wearable devices for both medical and consumer use, electronics, micro-mechanical systems, medical imaging, biometric security, and hearing aids. Dr. Daft also has experience in malpractice and product liability cases related to medical devices. A key aspect of Dr. Daft’s work is his ability to simplify complex technical matters for the finder of fact, making them accessible and understandable. This skill has been recognized by courts for its effectiveness in aiding the legal process. Dr. Daft’s background in patent prosecution encompasses the medical devices and artificial intelligence fields, where he has managed patent strategies for both large corporations and smaller entities. His academic achievements include publication in peer-reviewed journals and teaching engineering at the university level. His legal experience extends to involvement in Federal District Courts, International Trade Commission (ITC) section 337 investigations, and Patent Trial and Appeal Board (PTAB) proceedings. Dr. Daft provides services to plaintiffs and defendants roughly equally. Available upon request are references from prior retaining counsel, attesting to Dr. Daft’s contributions to their cases. His case work includes a variety of topics such as:
  • X-ray tomosynthesis for breast cancer diagnosis.
  • Employment law within the technology sector.
  • Wearable electronic devices for physiological measurement.
  • Aesthetic systems for body contouring.
  • Ultrasonic imaging systems’ signal processing.
  • Biometric security devices, encompassing both hardware and software.
  • Catheter systems for hypertension treatment.
  • Security systems for mobile phones.
  • Optical diagnostic systems for glaucoma.
  • Architecture and microelectronic design of point-of-care imaging systems.
  • Surgical device technology.
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Technical Consulting

transcranial
The ultrasonic field from a transducer placed on the scalp and performing transcranial neuromodulation. Simulation by River Sonic Solutions; full paper here.
River Sonic Solutions works with a network of partners to provide comprehensive solutions in the areas of:
  • Ultrasound
  • MEMS (micro-electro-mechanical systems)
  • Enabling microelectronics
Located in the San Francisco Bay Area, we assist clients locally and worldwide, from start-ups to the largest corporations, including multi-nationals. Learn More…

Associations and Partnerships

Ultraonics, Ferroelectrics and Frequency Control Society
university-arizona-center-consciousness-studies

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Dr. Chris Daft

Dr. Chris Daft

Dr. Chris Daft is an award winning, Oxford Educated scientist whose areas of expertise include medical imaging, electronics, semiconductors, medical devices, sensors, MEMS, signal processing and image processing. Dr. Daft has experience in industries and applications including medical devices, imaging, consumer electronics, biometric security, and electrical power delivery. Learn more...

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Expert Witnessing in AI, medical devices, MEMS and electronics

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Verified account @riversonicsolns ·
August 12, 2026

Paper https://arxiv.org/pdf/2601.01828 with conclusion that current LLMs show limited functional introspective awareness of certain internal states, specifically:

- Detection of injected “thoughts�
- Distinguishing internal representations from text inputs
- Distinguishing intended from

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Verified account @riversonicsolns ·
August 7, 2026

Oh my goodness!

And it has a particle accelerator underneath it for extreme ultraviolet?

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Verified account @riversonicsolns ·
August 2, 2026

OAI's Astra model just solved these, making Aug 1, 2026 probably the most important day in the history of the discipline of mathematics. (Until next week?)

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Verified account @riversonicsolns ·
July 31, 2026

This graph from @swyx shows the cost of GPT-4 level intelligence falling by 1000x over 18 months

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Verified account @gfodor ·
July 20, 2026

the stochastic parrots are getting pretty lucky

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Latest News

Agentic Local AI for Expert Witnessing

Here is a write-up of the talk I gave at the Expert Witness conference on agentic local AI for expert witnessing. The talk generated a lot of questions at the conference so I thought it worth posting a summary.

33rd Annual National Expert Witness Conference

Very glad to be presenting at the 33rd Annual National Expert Witness Conference in Clearwater Beach, FL. My talk on AI and Expert Witnessing: Opportunities and Risks will be at 9.00 AM on May 3, 2026. The talk will include information about: Litigation disasters from AI AI’s value for experts Confidentiality (e.g. protective orders) Local […]

On The Stand interview

Ashish Arun of Exlitem did an in-depth interview with me for their On The Stand podcast. You can find it on YouTube here.

Ambient: blockchain and AI colliding

Relevance of the Ambient blockchain As an expert witness working both in AI and blockchain, I have been struck by the approach taken by Ambient for providing distribute AI compute incentives. Large-language models (LLMs) are fast becoming basic infrastructure. Ambient positions itself as the “AI-secured blockchain” that will underwrite that infrastructure, doing for autonomous agents […]

Interview on Engaging Experts podcast

The expert witness referral firm Round Table Group was kind enough to interview me on their podcast. If you want to listen on your mobile device, it’s on their Engaging Experts channel. It’s also on YouTube here.

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2443 Fillmore St. #380-4039
San Francisco, CA 94115 USA
(833) 860-3966 (toll-free)

Expert Witnessing

expert@riversonicsolutions.com

Technical Consulting

info@riversonicsolutions.com

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