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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
CHUGAI SEIYAKU KABUSHIKI KAISHA	5-1 UKIMA 5-CHOME KITA-KU TOKYO 115-8543

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• C07K:PEPTIDES

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
MAINI, Ravinder Nath	Barnes, GB	9	201
OKUDA, Osamu	Tokyo, JP	64	956
YOSHIDA, Noriaki	Tokyo, JP	50	805

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Mar 16, 2025
7.5 Year Payment	$3600.00	$1800.00	$900.00	Mar 16, 2029
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Mar 16, 2033

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent Application No: 2021/0283,250

METHOD FOR TREATING RHEUMATOID ARTHRITIS WITH A HUMAN IL-6 RECEPTOR ANTIBODY AND METHOTREXATE

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