Invalidity dossier
US 11103142
System and method for predicting vertebral artery dissection
Current assignee: Tencent America LLC
Added 9/23/2026, 2:34:18 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview: US11103142B2
Title: System and method for predicting vertebral artery dissection
Patent number: US11103142B2
Assignee: Tencent America LLC (original and current assignee, per the listing)
Application number: US16/372,996
Filed / Priority date: 2019-04-02
Publication date: 2021-08-31 (earlier publication as US20200315465A1 on 2020-10-08)
Adjusted expiration: 2039-10-31; legal status listed as Active
Inventor(s): Hui Tang, Nan Du, Min Tu, Kun Wang, Lianyi Han, Wei Fan
Related filings noted: PCT/US2020/020091 (WO2020205105A1) and CN202080020570.0A (CN114096191B)
Purpose
The patent addresses vertebral artery dissection (VAD), described in the source as "one of the most frequent causes of transient ischemic attacks and subarachnoid hemorrhage in patients aged between 18 to 45 years old." Because VAD symptoms are "not unusual," clinicians may miss it; the patent states that predicting VAD development is important for prevention and for accurate diagnosis and treatment.
Plain-language scope
The excerpt describes "a method of determining a risk probability of vertebral artery dissection (VAD) in a patient" that includes receiving medical image information and clinical report information of the patient. Classification data indicate the subject matter falls under medical image processing (G16H30/40), blood-vessel condition evaluation (A61B5/02007), predicting development of a medical condition based on physiological measurements (A61B5/7275), neural networks including convolutional and supervised-learning variants (G06N3/04, G06N3/0464, G06N3/09), and vessel centerline processing (G06T2207/30172). Prior-art keywords listed include centerline, processor, vertebral artery, patient, and medical image.
Source: https://patents.google.com/patent/[US11103142](/patent/US11103142)/en
What the excerpt does not establish
The supplied text is explicitly marked "[Excerpt only; consult the source for omitted text.]" It ends mid-sentence at the receiving step. It therefore does not establish the full claim set, the specific processing steps, model architecture details, training data, or any measured performance. Legal-status and priority-date entries are expressly assumptions, not legal conclusions.
Generated 10/1/2026, 9:52:12 PM
Cases on file (0)
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Litigation summary
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Proceedings on file (0)
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No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.
PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Prior art
Earlier patents, publications, and products that may anticipate or render the claims unpatentable.
Obviousness
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
Extensions
Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.
Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.