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

Patent Owner(s)

Patent Owner	Address
EISAI R&D MANAGEMENT CO LTD	TOKYO JAPAN

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chase, Charles E	Londonderry, US	32	889
Endo, Atsushi	Boston, US	126	1749
Fang, Francis G	Andover, US	63	1220
Li, Jing	Andover, US	1112	6098

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Apr 30, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Apr 30, 2029

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
October 31, 2017	US,9802953,B2   US9802953B2	GRANTED PATENT AS SECOND PUBLICATION
July 28, 2016	US,20160214992,A1   US20160214992A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9802953

Intermediates and methods for the synthesis of halichondrin B analogs

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