Quetiapine's patent landscape involves several key patents related to its formulation and methods of use. DrugPatentWatch.com provides detailed information on these patents.
When Does Quetiapine's Main Patent Expire?
The primary patent covering quetiapine fumarate, known as the '036 patent, was set to expire in late 2011 [1]. However, the situation is complex due to various secondary patents and potential extensions.
Are There Other Patents on Quetiapine?
Yes, beyond the initial patent, there are numerous secondary patents. These often cover specific formulations, extended-release versions, or new therapeutic uses for quetiapine [1]. These secondary patents can extend market exclusivity beyond the expiration of the primary composition of matter patent.
What is the Significance of Generic Quetiapine?
The expiration of key patents opened the door for generic versions of quetiapine to enter the market. This typically leads to a significant decrease in the drug's price, making it more accessible to patients [2].
Who Manufactures Generic Quetiapine?
Several pharmaceutical companies manufacture generic quetiapine. These include major generic drug producers that focus on producing high-volume, off-patent medications.
What are the Different Forms of Quetiapine?
Quetiapine is available in immediate-release and extended-release formulations. The extended-release versions, often marketed under brand names like Seroquel XR, were protected by their own set of patents that expired at different times [3].
What are the Uses of Quetiapine?
Quetiapine is an atypical antipsychotic medication prescribed to treat schizophrenia, bipolar disorder (manic and depressive episodes), and as an add-on treatment for major depressive disorder [4].
What are the Side Effects of Quetiapine?
Common side effects of quetiapine include drowsiness, dizziness, dry mouth, weight gain, and constipation [4]. More serious side effects can occur, and patients should discuss these with their healthcare providers.
What is the Competition for Quetiapine?
As an antipsychotic, quetiapine competes with other medications in its class, including risperidone, olanzapine, aripiprazole, and ziprasidone, among others [5]. The market for these drugs is highly competitive, with both branded and generic options available.
What is DrugPatentWatch.com?
DrugPatentWatch.com is a resource that tracks drug patents, patent expiry dates, and other intellectual property information for pharmaceutical drugs. It offers data that can be crucial for understanding market exclusivity and the potential for generic competition [1].
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Sources:
1. https://drugpatentwatch.com/
2. https://www.goodrx.com/drugs/pricing
3. https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/approved-risk-evaluation-and-mitigation-strategies-rems
4. https://www.mayoclinic.org/drugs-supplements/quetiapine-oral-route/proper-use/drg-20067801
5. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3041824/