API and IP Newsletter


Contents

ANDAs approved in April 2023


We follow generic FDA approvals every month, especially small molecules ie ANDAs.

In April about 83 ANDAs were approved and out of which about 10 were tentative approvals.

Some of our observations are as below.


Drug Name

Active Ingredients

Company

Comments

DOXEPIN HYDROCHLORIDE ANDA  #214823

DOXEPIN HYDROCHLORIDE

MSN

This approval is for 3 and 6 MG tablets. There are 5 other approvals. Doxepin is indicated to treat mental/mood problems such as depression and anxiety. All formulators must circumvent US9532971B2 for US launches. It is good to assume that MSN would have circumvented this patent. US sale of Doxepin tablet is not available in the public domain but capsule sale in the US is reported, and it is less than USD 20 mio/a.

ACETAZOLAMIDE ANDA  #211069

ACETAZOLAMIDE

ZYDUS

This approval is for 125 MG and 250 MG tablets. There are several other approvals. It is used to treat glaucoma, epilepsy, altitude sickness, periodic paralysis, idiopathic intracranial hypertension, and heart failure and to alkalinize urine. This is a small product in the USA and had annual sales of USD 16 million as per IQVIA MAT December 2022 data.

CARBIDOPA AND LEVODOPA               ANDA  #215999

CARBIDOPA; LEVODOPA

ZYDUS PHARMS

These are approvals for three strengths of Cabi: Levodopa 10:100, 25:100, 25: 250 MG tablets. This is a small product in the US, recent market size in the US for this combination is not available in the public domain but two years ago it was less than USD 20 mio product in the USA.

NELARABINE           ANDA  #216346

NELARABINE

AMNEAL

This is 5th generic approval for nelarabine injection.  Maybe not much meat is left in this product by now. On 18 November 2021, Zydus launched an AP-rated generic version of the Arranon (nelarabine) injection.
Zydus was granted a 180-day Competitive Generic Therapy designation then. Since May 2022, few others were approved. Amneal is one of them.  According to IQVIA, Arranon had annual sales of approximately $34.5 million ending in September 2021 in the U.S. It is approved for the treatment of T-cell acute lymphoblastic leukaemia and T-cell
lymphoblastic lymphoma

BEPOTASTINE BESILATE                  ANDA #214588

BEPOTASTINE BESILATE

ALEMBIC

It is a 1.5% ophthalmic solution. This medication is used to treat itching of the eyes due to allergies. For launch before July 2023, Alembic should have circumvented US 8877168. 


General information


Challenges of manufacturing eye care medicines in India


Shortage of Skilled Labour: The Indian pharmaceutical industry faces a shortage of skilled labour, which hampers the manufacturing process. To overcome this challenge, the industry needs to invest in training and development programs to upskill the existing workforce and attract new talent to the industry.

Lack of Adequate Infrastructure: Though initiatives and efforts by the government are driving the growth of the sector, the Indian pharmaceutical industry still lacks adequate infrastructure, which makes it difficult to manufacture high-quality eye care medicines.

News here.


Dual draft guidance outline FDA vision for paediatric drug development, exclusivity


The FDA says these new draft guidance “revise and replace” a 2005 draft guidance, How to Comply with the Pediatric Research Equity Act. The agency notes, however, that the new draft documents do not replace “any other pediatric guidance already published.”

“The substantial lag between approval of a drug for adult use and the approval in children,” Lynne Yao, director of the Division of Pediatrics and Maternal Health, said in a statement


News here


Intellectual Property 


GSK vs Teva on Skinny label or label cave out issue


Section viii carve-outs

What are Section viii carve-outs in the US?


The statute (21 U.S.C. § 355(j)(2)(A)(viii)) allows the generic sponsor to remove or “carve out” the protected indication or other protected condition of use from the product labelling, and submit a “section viii” statement explaining that the applicant does not seek approval for the protected use


Though the statue looks simply the issues related to section viii carve-outs remain unresolved in the context of small molecules. 


This is the case of Carvedilol and GSK’s patent # `000 reissued in 2008, related to the treatment of congestive heart failure post-myocardial infarction using carvedilol.


In the lower court, Teva argued that it could not be found to have induced infringement because the patented use was carved out on the skinny label.

The lower Court held that GSK failed to prove Teva caused the direct infringement. 


GSK appealed. On appeal, GSK argued that Teva promotes its generic product as being the same as the branded product. 

In October 2021, a three-judge CAFC panel decided in favour of GSK and impose a $235 mio penalty on Teva.  


Decision here.


The petition was filed at Supreme Court. In the US, the Supreme Court in general takes up very few cases on petition. In March 2023, Biden Government’s solicitor general Elizabeth Prelogar requested Supreme Court justice that the case is a suitable vehicle to address the larger existential question for the industry over skinny labels.


The issue to be addressed by Supreme Court was, whether a generic drug manufacturer's FDA-approved label that carves out all of the languages the brand manufacturer has identified as covering its patented uses can be held liable on a theory that its label still intentionally encourages the infringement of those carved-out uses.


However, in spite of intervention from the US Government on 15 May Supreme Court denied Teva’s petition. 


This is not good for Teva. With the denial, Teva will continue to owe a $235 million pay-out to GSK which was imposed after the CAFC ruling in October 2021 which stated Teva persuaded doctors to prescribe its generic version Coreg (Carvedilol).


Decision here.











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