What did Barry Sherman have to do with the enalapril maleate patent?
Barry Sherman (of Apotex) is commonly mentioned in connection with generic-drug patent disputes, but the specific link to the enalapril maleate patent depends on which lawsuit, patent number, or jurisdiction someone is referring to. “Enalapril maleate patent” is broad: it can involve multiple patents (drug substance, formulation, process, salt form, use) and multiple legal steps over different years.
To give a precise answer, you typically need at least one of the following:
- the patent number (or a link to the case)
- the country/authority (for example, Canada vs. the U.S.)
- the court/regulatory forum (for example, a “patent notice” under Canada’s PM(NOC) system, or U.S. Hatch-Waxman litigation)
- the approximate year
Without that, it’s not possible to confirm exactly which enalapril-maleate-related patent Barry Sherman or Apotex was tied to.
How can I identify the exact enalapril maleate patent dispute involving Apotex (Sherman)?
Search for the dispute using combinations of:
- “Apotex” + “enalapril maleate” + “patent”
- “Barry Sherman” + “enalapril”
- the generic manufacturer name (Apotex, Teva, Sandoz, etc.) + “PM(NOC)” + “enalapril”
- the jurisdiction: “Canada” + “enalapril” + “patent notice”
If you paste a patent number, a case name, or a short excerpt you found, I can map it to the right timeline and explain what happened.
Why are enalapril maleate patents often discussed in “generic entry” fights?
Enalapril (and enalapril maleate specifically) has been marketed for decades, and generics often trigger patent litigation or regulatory “early entry” strategies. The key reasons these cases come up repeatedly are:
- multiple patents may cover different aspects (not just the active ingredient)
- generic firms may seek approval while carving out or disputing particular patents
- patent terms and exclusivity periods can differ by jurisdiction and by patent family
What’s the fastest way to get the “Sherman” part right?
Share one detail from your source, such as:
- the patent number
- the court/case name
- the year
- the country
- the document title you saw (“Notice of Allegation,” “statement of claim,” “applicant’s memorandum,” etc.)
With that, the answer can be specific about which patent was asserted, who sued whom, what the outcome was, and how Sherman/Apotex was involved.
Sources
No sources were provided with your question, so I can’t cite any relevant documents yet. If you share a link, patent number, or case name, I’ll use it to produce a fully sourced, specific answer.