CN113677372A - 可活化免疫检查点抑制剂和经缀合可活化抗体的组合疗法 - Google Patents

可活化免疫检查点抑制剂和经缀合可活化抗体的组合疗法 Download PDF

Info

Publication number
CN113677372A
CN113677372A CN202080027982.7A CN202080027982A CN113677372A CN 113677372 A CN113677372 A CN 113677372A CN 202080027982 A CN202080027982 A CN 202080027982A CN 113677372 A CN113677372 A CN 113677372A
Authority
CN
China
Prior art keywords
antibody
activatable
seq
subject
target
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202080027982.7A
Other languages
English (en)
Chinese (zh)
Inventor
E·莉斯可
T·谢
M·A·克里姆
W·加纳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cytomx Therapeutics Inc
Original Assignee
Cytomx Therapeutics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cytomx Therapeutics Inc filed Critical Cytomx Therapeutics Inc
Publication of CN113677372A publication Critical patent/CN113677372A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6835—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site
    • A61K47/6849—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a receptor, a cell surface antigen or a cell surface determinant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6801—Drug-antibody or immunoglobulin conjugates defined by the pharmacologically or therapeutically active agent
    • A61K47/6803—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates
    • A61K47/68033—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates the drug being a maytansine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6835—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site
    • A61K47/6851—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a determinant of a tumour cell
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6889—Conjugates wherein the antibody being the modifying agent and wherein the linker, binder or spacer confers particular properties to the conjugates, e.g. peptidic enzyme-labile linkers or acid-labile linkers, providing for an acid-labile immuno conjugate wherein the drug may be released from its antibody conjugated part in an acidic, e.g. tumoural or environment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/28—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/2803—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/28—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/2803—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
    • C07K16/2818—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily against CD28 or CD152
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
    • A61K2039/507—Comprising a combination of two or more separate antibodies
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
    • C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2319/00—Fusion polypeptide
    • C07K2319/50—Fusion polypeptide containing protease site

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Organic Chemistry (AREA)
  • Epidemiology (AREA)
  • Cell Biology (AREA)
  • Molecular Biology (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • Genetics & Genomics (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Peptides Or Proteins (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicinal Preparation (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
CN202080027982.7A 2019-02-26 2020-02-26 可活化免疫检查点抑制剂和经缀合可活化抗体的组合疗法 Pending CN113677372A (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201962810698P 2019-02-26 2019-02-26
US62/810,698 2019-02-26
US201962825228P 2019-03-28 2019-03-28
US62/825,228 2019-03-28
PCT/US2020/019978 WO2020176672A1 (en) 2019-02-26 2020-02-26 Combined therapies of activatable immune checkpoint inhibitors and conjugated activatable antibodies

Publications (1)

Publication Number Publication Date
CN113677372A true CN113677372A (zh) 2021-11-19

Family

ID=69960745

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080027982.7A Pending CN113677372A (zh) 2019-02-26 2020-02-26 可活化免疫检查点抑制剂和经缀合可活化抗体的组合疗法

Country Status (5)

Country Link
US (1) US20220233705A1 (https=)
EP (1) EP3930761A1 (https=)
JP (1) JP2022523200A (https=)
CN (1) CN113677372A (https=)
WO (1) WO2020176672A1 (https=)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL292798A (en) 2015-05-04 2022-07-01 Cytomx Therapeutics Inc Anti-cd166 antibodies, activatable anti-cd166 antibodies, preparations containing them and their uses
CN111201030B (zh) 2017-07-25 2024-11-01 真和制药有限公司 通过阻断tim-3和其配体的相互作用治疗癌症
WO2020160156A2 (en) 2019-01-30 2020-08-06 Immutics, Inc. Anti-gal3 antibodies and uses thereof
EP4157338A4 (en) 2020-05-26 2024-11-13 TrueBinding, Inc. METHOD FOR TREATING INFLAMMATORY DISEASES BY GALECTIN-3 BLOCKING
WO2022081541A1 (en) * 2020-10-13 2022-04-21 Chan Zuckerberg Biohub, Inc. Compositions and methods involving antibody constructs
US20250333539A1 (en) 2022-03-23 2025-10-30 Cytomx Therapeutics, Inc. Activatable antigen-binding protein constructs and uses of the same
JP2025512798A (ja) 2022-03-25 2025-04-22 サイトムエックス セラピューティクス，インク． 活性化可能な二重アンカー型マスク化分子及びその使用方法
EP4504782A2 (en) 2022-04-01 2025-02-12 CytomX Therapeutics, Inc. Cd3-binding proteins and methods of use thereof
WO2023192973A1 (en) 2022-04-01 2023-10-05 Cytomx Therapeutics, Inc. Activatable multispecific molecules and methods of use thereof
AR130078A1 (es) 2022-08-01 2024-10-30 Cytomx Therapeutics Inc Substratos escindibles por proteasas, y métodos de uso de los mismos
JP2025525867A (ja) 2022-08-01 2025-08-07 サイトムエックス セラピューティクス，インク． プロテアーゼ切断性部分及びその使用方法
JP2025525868A (ja) 2022-08-01 2025-08-07 サイトムエックス セラピューティクス，インク． プロテアーゼ切断性部分及びその使用方法
EP4565250A1 (en) 2022-08-01 2025-06-11 CytomX Therapeutics, Inc. Protease-cleavable substrates and methods of use thereof
JP2025525880A (ja) 2022-08-01 2025-08-07 サイトムエックス セラピューティクス，インク． プロテアーゼ切断性部分及びその使用方法
EP4695281A1 (en) 2023-04-12 2026-02-18 CytomX Therapeutics, Inc. Masking polypeptides, activatable cytokine constructs, and related compositions and methods
CN120936384A (zh) 2023-04-12 2025-11-11 西托姆克斯治疗公司 掩蔽多肽、可活化细胞因子构建体以及相关组合物和方法
WO2024216170A2 (en) 2023-04-12 2024-10-17 Cytomx Therapeutics, Inc. Activatable cytokine constructs and related compositions and methods
WO2026020161A1 (en) 2024-07-19 2026-01-22 Cytomx Therapeutics, Inc. Activatable il-12 constructs and related compositions and methods
WO2026024841A1 (en) 2024-07-24 2026-01-29 Astellas Us Llc Bispecific antibodies that bind cd3 and muc1 and methods of use thereof
WO2026035650A2 (en) 2024-08-05 2026-02-12 Cytomx Therapeutics, Inc. Cleavable polypeptides and methods of use thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150005477A1 (en) * 2013-06-04 2015-01-01 Cytomx Therapeutics, Inc. Compositions and methods for conjugating activatable antibodies
CN107849133A (zh) * 2015-05-04 2018-03-27 西托姆克斯治疗公司 抗cd166抗体、可活化抗cd166抗体及其使用方法
CN108112254A (zh) * 2015-03-13 2018-06-01 西托姆克斯治疗公司 抗-pdl1抗体、可活化的抗-pdl1抗体、及其使用方法
CN108368170A (zh) * 2015-07-13 2018-08-03 西托姆克斯治疗公司 抗pd-1抗体、可活化抗pd-1抗体及其使用方法
WO2018222949A1 (en) * 2017-06-01 2018-12-06 Cytomx Therapeutics, Inc. Activatable anti-pdl1 antibodies, and methods of use thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773919A (en) 1969-10-23 1973-11-20 Du Pont Polylactide-drug mixtures
US4485045A (en) 1981-07-06 1984-11-27 Research Corporation Synthetic phosphatidyl cholines useful in forming liposomes
US4522811A (en) 1982-07-08 1985-06-11 Syntex (U.S.A.) Inc. Serial injection of muramyldipeptides and liposomes enhances the anti-infective activity of muramyldipeptides
US4544545A (en) 1983-06-20 1985-10-01 Trustees University Of Massachusetts Liposomes containing modified cholesterol for organ targeting
EP0279862B1 (en) 1986-08-28 1993-11-03 Teijin Limited Cytocidal antibody complex and process for its preparation
US5013556A (en) 1989-10-20 1991-05-07 Liposome Technology, Inc. Liposomes with enhanced circulation time
US5151510A (en) 1990-04-20 1992-09-29 Applied Biosystems, Inc. Method of synethesizing sulfurized oligonucleotide analogs
DK0752248T3 (da) 1992-11-13 2000-11-13 Idec Pharma Corp Terapeutisk anvendelse af kimæriske og radioaktivt mærkede antistoffer mod humant B-lymfocytbegrænset differentieringsantig
AU2006284651C1 (en) 2005-08-31 2013-09-12 The Regents Of The University Of California Cellular libraries of peptide sequences (CLiPS) and methods of using the same
US20090304719A1 (en) 2007-08-22 2009-12-10 Patrick Daugherty Activatable binding polypeptides and methods of identification and use thereof
RU2636046C2 (ru) 2009-01-12 2017-11-17 Сайтомкс Терапьютикс, Инк Композиции модифицированных антител, способы их получения и применения
CA2761310C (en) 2009-05-07 2017-02-28 Charles S. Craik Antibodies and methods of use thereof
US9856314B2 (en) 2012-06-22 2018-01-02 Cytomx Therapeutics, Inc. Activatable antibodies having non-binding steric moieties and methods of using the same
EP2882844B1 (en) 2012-08-10 2018-10-03 Cytomx Therapeutics Inc. Protease-resistant systems for polypeptide display and methods of making and using thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150005477A1 (en) * 2013-06-04 2015-01-01 Cytomx Therapeutics, Inc. Compositions and methods for conjugating activatable antibodies
CN108112254A (zh) * 2015-03-13 2018-06-01 西托姆克斯治疗公司 抗-pdl1抗体、可活化的抗-pdl1抗体、及其使用方法
CN107849133A (zh) * 2015-05-04 2018-03-27 西托姆克斯治疗公司 抗cd166抗体、可活化抗cd166抗体及其使用方法
CN108368170A (zh) * 2015-07-13 2018-08-03 西托姆克斯治疗公司 抗pd-1抗体、可活化抗pd-1抗体及其使用方法
WO2018222949A1 (en) * 2017-06-01 2018-12-06 Cytomx Therapeutics, Inc. Activatable anti-pdl1 antibodies, and methods of use thereof

Also Published As

Publication number Publication date
US20220233705A1 (en) 2022-07-28
WO2020176672A1 (en) 2020-09-03
EP3930761A1 (en) 2022-01-05
JP2022523200A (ja) 2022-04-21

Similar Documents

Publication Publication Date Title
CN113677372A (zh) 可活化免疫检查点抑制剂和经缀合可活化抗体的组合疗法
JP7165217B2 (ja) 抗ｐｄｌ１抗体、活性化可能抗ｐｄｌ１抗体、およびその使用方法
TWI855012B (zh) 基質金屬蛋白酶可切割且絲胺酸蛋白酶或半胱胺酸蛋白酶可切割之受質和彼之使用方法
JP2022120070A (ja) 抗ｃｄ７１抗体、活性化可能抗ｃｄ７１抗体、およびその使用方法
CN110662766A (zh) Cd147抗体、可激活cd147抗体及其制备和使用方法
CN111212853A (zh) 可活化的抗cd166抗体及其使用方法
JP2022548310A (ja) 抗ｃｄ４７抗体、活性化可能抗ｃｄ４７抗体、およびその使用方法
CN113260383A (zh) 可活化的抗cd166抗体及其使用方法
KR20180010203A (ko) 항cd166 항체, 활성화가능한 항cd166 항체 및 이의 사용 방법
EP3762420A1 (en) Activatable cd147 antibodies and methods of making and use thereof
JP2018520092A (ja) 抗ＩＴＧａ３抗体、活性化可能抗ＩＴＧａ３抗体、およびその使用方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20211119

WD01 Invention patent application deemed withdrawn after publication