Enzymatic synthesis of 4′-ethynyl nucleoside analogs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 16, 2024
Grant Date -
Jul 21, 2022
app pub date -
Jul 2, 2019
filing date -
Jul 9, 2018
priority date (Note) -
In Force
status (Latency Note)
![]() |
A preliminary load of PAIR data current through [] has been loaded. Any more recent PAIR data will be loaded within twenty-four hours. |
PAIR data current through []
A preliminary load of cached data will be loaded soon.
Any more recent PAIR data will be loaded within twenty-four hours.
![]() |
Next PAIR Update Scheduled on [ ] |

Importance

US Family Size
|
Non-US Coverage
|
Abstract
The present invention relates to an enzymatic synthesis of 4′-ethynyl-2′-deoxy nucleosides and analogs thereof, for example EFdA, that eliminates the use of protecting groups on the intermediates, improves the stereoselectivity of glycosylation and reduces the number of process steps needed to make said compounds. It also relates to the novel intermediates employed in the process.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MERCK SHARP & DOHME LLC
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Campos, Kevin R | Berkeley Heights, US | 12 | 9 |
# of filed Patents : 12 Total Citations : 9 | |||
Devine, Paul N | Tinton Falls, US | 32 | 139 |
# of filed Patents : 32 Total Citations : 139 | |||
Fryszkowska, Anna | New York, US | 23 | 11 |
# of filed Patents : 23 Total Citations : 11 | |||
Huffman, Mark A | Warren, US | 20 | 84 |
# of filed Patents : 20 Total Citations : 84 | |||
Kolev, Joshua N | Califon, US | 7 | 2 |
# of filed Patents : 7 Total Citations : 2 | |||
Nawrat, Christopher C | Garwood, US | 2 | 0 |
# of filed Patents : 2 Total Citations : 0 | |||
Truppo, Matthew | Princeton, US | 6 | 4 |
# of filed Patents : 6 Total Citations : 4 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- C07H Class
- 0 % this patent is cited more than
- 1 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jan 16, 2028 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 16, 2032 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 16, 2036 |
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 |
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 |
Full Text

Legal Events
- No Legal Status data available.

Matter Detail

Renewals Detail
