Invalidity dossier

US 11021703

Methods and kit for characterizing the modified base status of a transcriptome

Current assignee: Cornell University

Added 9/23/2026, 9:53:00 PM

At a glanceNo PTAB challengesNo litigation on file

Active provider: DeepSeek · deepseek-flash

Patent summary

Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.

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Patent Overview — US11021703B2

Title: Methods and kit for characterizing the modified base status of a transcriptome.

Patent number / application: US11021703B2; application US14/377,680; pre-grant publication US20160060622A1.

Assignee: Cornell University (original assignee; a confirmatory NIH license was recorded 2017-09-29). Inventors: Samie R. Jaffrey, Kate D. Meyer, Christopher E. Mason.

Key dates: Priority date 2012-02-16; filing date 2013-02-18; publication of application 2016-03-03; grant/publication of the patent 2021-06-01; anticipated expiration 2033-02-18. Legal status listed as Active.

Purpose and plain-language scope (from the supplied excerpt): The patent concerns methods and a kit for characterizing the modified base status of a transcriptome — that is, determining where modified bases occur across the collection of RNA transcripts in a sample. The excerpt's indexing shows the subject matter centers on RNA, transcriptome, peaks, antibody, transcripts, and immunoprecipitation, with N(6)-methyladenosine (m6A) appearing in the claims and description. Associated terms include sequencing, nucleotide/nucleoside chemistry, beads (including paramagnetic and magnetic), crosslinking, fragmentation and cleavage, methylation, non-coding RNA and microRNA, poly(A) RNA, 3′/5′ UTRs, FTO, RNA editing, and antibodies/antigens. The abstract reference list also points to applications in disease, diagnosis, and prognosis, with disease mentions including cancer and obesity, and species/tissue mentions including human, mouse, rat, rabbit, and brain.

Source: https://patents.google.com/patent/[US11021703](/patent/US11021703)/en

What the excerpt does not establish: It does not reproduce the actual claim language, the full abstract, the written description, or any prior-art references and their citations. The "prior art keywords" list is an indexing artifact, not a statement of prior art. The excerpt does not establish claim scope, claim count, or which embodiments are claimed versus merely described; the legal status is expressly noted in the source as an assumption, not a legal conclusion. No litigation, ownership-transfer, validity, or prior-art analysis is presented here.

Generated 10/1/2026, 9:33:58 PM

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Litigation summary

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Proceedings on file (0)

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AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.

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.

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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.

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Prior art

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Obviousness

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Extensions

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Derivative works

Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.

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