Patents by Inventor Caifu Chen

Caifu Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240132946
    Abstract: In some embodiments, the present inventions relates generally to compositions, methods and kits for use in discriminating sequence variation between different alleles. More specifically, in some embodiments, the present invention provides for compositions, methods and kits for quantitating rare (e.g., mutant) allelic variants, such as SNPs, or nucleotide (NT) insertions or deletions, in samples comprising abundant (e.g., wild type) allelic variants with high specificity and selectivity. In particular, in some embodiments, the invention relates to a highly selective method for mutation detection referred to as competitive allele-specific TaqMan PCR (“cast-PCR”).
    Type: Application
    Filed: December 22, 2022
    Publication date: April 25, 2024
    Inventors: Caifu CHEN, Ruoying TAN
  • Patent number: 11926866
    Abstract: Methods for detecting on-target and predicted off-target genome editing events by providing a multiplex PCR reaction mixture with an on-target oligonucleotide primer and one or more off-target oligonucleotide primers and then hybridizing the on-target oligonucleotide primer and the one or more off-target oligonucleotide primers to target nucleic acid sequences, followed by cleaving blocking groups from the primers and extending the primers.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: March 12, 2024
    Assignee: INTEGRATED DNA TECHNOLOGIES, INC.
    Inventors: Joseph Dobosy, Caifu Chen, Mark Aaron Behlke, Garrett Richard Rettig
  • Patent number: 11891663
    Abstract: The present invention is directed to methods, reagents, kits, and compositions for identifying and quantifying target polynucleotide sequences. A linker probe comprising a 3? target specific portion, a loop, and a stem is hybridized to a target polynucleotide and extended to form a reaction product that includes a reverse primer portion and the stem nucleotides. A detector probe, a specific forward primer, and a reverse primer can be employed in an amplification reaction wherein the detector probe can detect the amplified target polynucleotide based on the stem nucleotides introduced by the linker probe. In some embodiments a plurality of short miRNAs are queried with a plurality of linker probes, wherein the linker probes all comprise a universal reverse primer portion a different 3? target specific portion and different stems. The plurality of queried miRNAs can then be decoded in a plurality of amplification reactions.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: February 6, 2024
    Assignee: APPLIED BIOSYSTEMS, LLC
    Inventors: Caifu Chen, Dana Ridzon, Zhaohui Zhou, Kai Qin Lao, Neil A. Straus
  • Publication number: 20230323472
    Abstract: In some embodiments, the present inventions relates generally to compositions, methods and kits for use in discriminating sequence variation between different alleles. More specifically, in some embodiments, the present invention provides for compositions, methods and kits for quantitating rare (e.g., mutant) allelic variants, such as SNPs, or nucleotide (NT) insertions or deletions, in samples comprising abundant (e.g., wild type) allelic variants with high specificity and selectivity. In particular, in some embodiments, the invention relates to a highly selective method for mutation detection referred to as competitive allele-specific TaqMan PCR (“cast-PCR”).
    Type: Application
    Filed: December 6, 2022
    Publication date: October 12, 2023
    Inventors: Caifu CHEN, Ruoying TAN
  • Patent number: 11692219
    Abstract: The invention pertains to construction of next-generation DNA sequencing (NGS) libraries for whole genome sequencing, targeted resequencing, sequencing-based screening assays, metagenomics, or any other application requiring sample preparation for NGS.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: July 4, 2023
    Assignee: INTEGRATED DNA TECHNOLOGIES, INC.
    Inventors: Zachary Zwirko, Yu Zheng, Mirna Jarosz, Caifu Chen, Joseph Walder
  • Patent number: 11572585
    Abstract: In some embodiments, the present inventions relates generally to compositions, methods and kits for use in discriminating sequence variation between different alleles. More specifically, in some embodiments, the present invention provides for compositions, methods and kits for quantitating rare (e.g., mutant) allelic variants, such as SNPs, or nucleotide (NT) insertions or deletions, in samples comprising abundant (e.g., wild type) allelic variants with high specificity and selectivity. In particular, in some embodiments, the invention relates to a highly selective method for mutation detection referred to as competitive allele-specific TaqMan PCR (“cast-PCR”).
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: February 7, 2023
    Assignee: Life Technologies Corporation
    Inventors: Caifu Chen, Ruoying Tan
  • Patent number: 11530450
    Abstract: In some embodiments, the present inventions relates generally to compositions, methods and kits for use in discriminating sequence variation between different alleles. More specifically, in some embodiments, the present invention provides for compositions, methods and kits for quantitating rare (e.g., mutant) allelic variants, such as SNPs, or nucleotide (NT) insertions or deletions, in samples comprising abundant (e.g., wild type) allelic variants with high specificity and selectivity. In particular, in some embodiments, the invention relates to a highly selective method for mutation detection referred to as competitive allele-specific TaqMan PCR (“cast-PCR”).
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: December 20, 2022
    Inventors: Caifu Chen, Ruoying Tan
  • Publication number: 20220195511
    Abstract: The present disclosure is drawn to methods for detection, quantitation and analysis of nucleotides of interest, for example SNPs, in nucleic acid sequences of interest using universal FRET-based reporter primers.
    Type: Application
    Filed: January 12, 2022
    Publication date: June 23, 2022
    Inventors: Kelly LI, Shoulian DONG, Caifu CHEN
  • Publication number: 20220119873
    Abstract: This disclosure relates to methods and kits for karyotyping in which chromosomes are interrogated by amplifying loci that are not within copy number variable regions thereof.
    Type: Application
    Filed: November 2, 2021
    Publication date: April 21, 2022
    Inventors: Adam BROOMER, Kelly LI, Andreas TOBLER, Caifu CHEN, David KEYS
  • Publication number: 20220119875
    Abstract: Methods, compositions, and kits for capturing, detecting, and quantifying mature small RNAs are provided herein. Embodiments of the methods comprise ligating 5? and 3? ligation adaptors to the 5? and 3? ends of the mature small RNAs, respectively, in the presence of 5? and 3? semi-degenerate ligation splints to generate a ligation product. Other embodiments comprise reverse transcribing polyadenylated mature small RNA with a universal reverse transcription primer and ligating an adaptor to the 3? end of the cDNA in the presence of a semi-degenerate ligation splint to generate a cDNA ligation product.
    Type: Application
    Filed: December 27, 2021
    Publication date: April 21, 2022
    Inventors: Linda WONG, Caifu CHEN, Yalei WU, Shoulian DONG, Chunmei LIU
  • Patent number: 11254977
    Abstract: The present disclosure is drawn to methods for detection, quantitation and analysis of nucleotides of interest, for example SNPs, in nucleic acid sequences of interest using universal FRET-based reporter primers.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: February 22, 2022
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Kelly Li, Shoulian Dong, Caifu Chen
  • Patent number: 11208688
    Abstract: Methods, compositions and kits for capturing, detecting and quantifying mature small RNAs are provided herein. Embodiments of the methods comprise ligating 5? and 3? ligation adaptors to the 5? and 3? ends of the mature small RNAs, respectively, in the presence of 5? and 3? semi-degenerate ligation splints to generate a ligation product. Other embodiments comprise reverse transcribing polyadenylated mature small RNA with a universal reverse transcription primer and ligating an adaptor to the 3? end of the cDNA in the presence of a semi-degenerate ligation splint to generate a cDNA ligation product.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: December 28, 2021
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Linda Wong, Caifu Chen, Yalei Wu, Shoulian Dong, Chunmei Liu
  • Patent number: 11193165
    Abstract: This disclosure relates to methods and kits for karyotyping in which chromosomes are interrogated by amplifying loci that are not within copy number variable regions thereof.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: December 7, 2021
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Adam Broomer, Kelly Li, Andreas Tobler, Caifu Chen, David Keys
  • Publication number: 20210285033
    Abstract: The invention can be used to provide a more efficient and less error-prone method of detecting variants in DNA, such as SNPs and indels. The invention also provides a method for performing inexpensive multiplex assays.
    Type: Application
    Filed: October 30, 2020
    Publication date: September 16, 2021
    Inventors: Caifu CHEN, Joseph DOBOSY, Pak Wah TSANG, Mark Aaron BEHLKE, Scott ROSE, Kristin BELTZ, Garrett RETTIG
  • Publication number: 20210202034
    Abstract: The invention can be used to provide a more efficient and less error-prone method of detecting variants in DNA, such as SNPs and indels. The invention also provides a method for performing inexpensive multiplex assays. The invention also provides methods for detection of DNA sequences altered after cleavage by a targetable endonuclease, such as the CRISPR Cas9 protein from the bacterium Streptococcus pyogenes.
    Type: Application
    Filed: January 4, 2021
    Publication date: July 1, 2021
    Inventors: Joseph DOBOSY, Caifu CHEN, Mark Aaron BEHLKE, Garrett Richard RETTIG
  • Publication number: 20210147926
    Abstract: The invention pertains to construction of next-generation DNA sequencing (NGS) libraries for whole genome sequencing, targeted resequencing, sequencing-based screening assays, metagenomics, or any other application requiring sample preparation for NGS.
    Type: Application
    Filed: January 5, 2021
    Publication date: May 20, 2021
    Inventors: Zachary Zwirko, Yu Zheng, Mirna Jarosz, Caifu Chen, Joseph Walder
  • Patent number: 10894979
    Abstract: The invention pertains to construction of next-generation DNA sequencing (NGS) libraries for whole genome sequencing, targeted resequencing, sequencing-based screening assays, metagenomics, or any other application requiring sample preparation for NGS.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: January 19, 2021
    Assignee: INTEGRATED DNA TECHNOLOGIES, INC.
    Inventors: Zachary Zwirko, Yu Zheng, Mirna Jarosz, Caifu Chen, Joseph Walder
  • Patent number: 10886006
    Abstract: The invention can be used to provide a more efficient and less error-prone method of detecting variants in DNA, such as SNPs and indels. The invention also provides a method for performing inexpensive multiplex assays. The invention also provides methods for detection of DNA sequences altered after cleavage by a targetable endonuclease, such as the CRISPR Cas9 protein from the bacterium Streptococcus pyogenes.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: January 5, 2021
    Assignee: INTEGRATED DNA TECHNOLOGIES, INC.
    Inventors: Joseph Dobosy, Caifu Chen, Mark Aaron Behlke, Garrett Richard Rettig
  • Publication number: 20200407789
    Abstract: The present invention is directed to methods, reagents, kits, and compositions for identifying and quantifying target polynucleotide sequences. A linker probe comprising a 3? target specific portion, a loop, and a stem is hybridized to a target polynucleotide and extended to form a reaction product that includes a reverse primer portion and the stem nucleotides. A detector probe, a specific forward primer, and a reverse primer can be employed in an amplification reaction wherein the detector probe can detect the amplified target polynucleotide based on the stem nucleotides introduced by the linker probe. In some embodiments a plurality of short miRNAs are queried with a plurality of linker probes, wherein the linker probes all comprise a universal reverse primer portion a different 3? target specific portion and different stems. The plurality of queried miRNAs can then be decoded in a plurality of amplification reactions.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 31, 2020
    Inventors: Caifu CHEN, Dana RIDZON, Zhaohui ZHOU, Kai Qin LAO, Neil A. STRAUS
  • Publication number: 20200347447
    Abstract: In some embodiments, the present inventions relates generally to compositions, methods and kits for use in discriminating sequence variation between different alleles. More specifically, in some embodiments, the present invention provides for compositions, methods and kits for quantitating rare (e.g., mutant) allelic variants, such as SNPs, or nucleotide (NT) insertions or deletions, in samples comprising abundant (e.g., wild type) allelic variants with high specificity and selectivity. In particular, in some embodiments, the invention relates to a highly selective method for mutation detection referred to as competitive allele-specific TaqMan PCR (“cast-PCR”).
    Type: Application
    Filed: May 12, 2020
    Publication date: November 5, 2020
    Inventors: Caifu CHEN, Ruoying TAN