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

Patent Owner(s)

• IMMUNOGEN, INC.

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Widdison, Wayne C	Belmont, US	38	929

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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	Jun 13, 2024
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jun 13, 2028

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
December 13, 2016	US,9518017,B2   US9518017B2	GRANTED PATENT AS SECOND PUBLICATION
May 19, 2016	US,20160137604,A1   US20160137604A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 2016/0137,604

PURIFICATION OF INTERMEDIATES USED IN THE PREPARATION OF HETEROBIFUNCTIONAL LINKERS

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