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Serving hundreds of leading biopharmaceutical companies globally:

QuintilesIMS
Chinese Patent Office
Cantor Fitzgerald
Federal Trade Commission
US Department of Justice
Dow
Cerilliant
McKesson
Medtronic

Generated: July 18, 2018

DrugPatentWatch Database Preview

Details for Patent: 6,939,964

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Which drugs does patent 6,939,964 protect, and when does it expire?

Patent 6,939,964 protects SUSTIVA and ATRIPLA and is included in three NDAs.

Protection for SUSTIVA has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has forty-two patent family members in twenty countries.
Summary for Patent: 6,939,964
Title: Crystal forms of (-)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-ben zoxazin-2-one
Abstract:The instant invention describes a method for crystallizing (-)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-ben zoxazin-2-one from a solvent and anti-solvent solvent system and producing the crystalline product. The desired final crystal form, Form I, can be produced when using methanol or ethanol. Form II is isolated from 2-propanol and can be converted to the desired crystal form at low drying temperatures, such as between about a temperature of 40.degree. C. and 50.degree. C.
Inventor(s): Crocker; Louis S. (Belle Mead, NJ), Kukura, II; Joseph L. (Somerset, NJ), Thompson; Andrew S. (Mountainside, NJ), Stelmach; Christine (Westfield, NJ), Young; Steven D. (Lansdale, PA)
Assignee: Merck & Co., Inc. (Rahway, NJ)
Application Number:10/891,749
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,939,964
Patent Claim Types:
see list of patent claims
Compound;

Drugs Protected by US Patent 6,939,964

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bristol Myers Squibb SUSTIVA efavirenz CAPSULE;ORAL 020972-001 Sep 17, 1998 AB RX Yes No ➤ Try a Free Trial ➤ Try a Free Trial Y ➤ Try a Free Trial
Bristol Myers Squibb SUSTIVA efavirenz CAPSULE;ORAL 020972-002 Sep 17, 1998 DISCN Yes No ➤ Try a Free Trial ➤ Try a Free Trial Y ➤ Try a Free Trial
Bristol Myers Squibb SUSTIVA efavirenz CAPSULE;ORAL 020972-003 Sep 17, 1998 AB RX Yes Yes ➤ Try a Free Trial ➤ Try a Free Trial Y ➤ Try a Free Trial
Gilead Sciences ATRIPLA efavirenz; emtricitabine; tenofovir disoproxil fumarate TABLET;ORAL 021937-001 Jul 12, 2006 RX Yes Yes ➤ Try a Free Trial ➤ Try a Free Trial Y ➤ Try a Free Trial
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate

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Non-Orange Book US Patents Family Members for Patent 6,939,964

For Orange Book-listed patents (shown in the main table above) generic applications must certify that the listed patents are expired, invalid, or will not be infringed by generic entry.

The non-Orange Book patents listed below do not require formal certifications, so they do not automatically impede generic entry. Instead, they represent potential opportunities for branded firms to block generic entry through patent infringment challenges.

Patent No. Title Estimated Patent Expiration
5,965,729 Process for the crystallization of a reverse transcriptase inhibitor using an anti-solvent ➤ Try a Free Trial
6,639,071 Crystal Forms of (-)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-ben zoxazin-2-one ➤ Try a Free Trial
Patent No. Title Estimated Patent Expiration

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International Family Members for US Patent 6,939,964

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Poland 197740 ➤ Try a Free Trial
Poland 334478 ➤ Try a Free Trial
New Zealand 336510 ➤ Try a Free Trial
Norway 320128 ➤ Try a Free Trial
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Merck
McKesson
Farmers Insurance
Cerilliant
Deloitte
Express Scripts
Teva
Boehringer Ingelheim
US Department of Justice

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