Will ‘Patent Thicket’ Delay Biosimilar Drug Entry in India?

Will ‘Patent Thicket’ Delay Biosimilar Drug Entry in India?

Do pharma and biotech investors encourage companies indulging in ‘patent thicket?’ This question recently grabbed media headlines. On April 02, 2019, one such report brought out: AbbVie investors are calling for the Chair-CEO power split, flagging the CEO’s USD 4 million bonus payout, fueled by the company’s Humira ‘patent thicket’ strategy related aggressive price hikes. It prolonged the brand’s market monopoly, blocking entries of its cheaper biosimilar equivalents.

I have discussed some related issues in this blog, previously. As the issue is gaining relevance also in the Indian context, this article will deliberate the ill-effects of ‘patent thicket’ on patient health-interest. The sole beneficiaries for the creation of this self-serving labyrinth are the manufacturers of high-priced patented drugs, as reported above. Before I proceed further, let me recapitulate what exactly is a ‘patent thicket.’

‘Patent Thicket’:

The dictionary definition of patent thicket is: ‘A group of patents in a field of technology which collectively impede a party from commercializing its own patents or products in that field.’In the current context, it means a dense web of overlapping patent rights that restrict a generic or a biosimilar drug maker from commercializing its cheaper equivalents post expiry of the original patent.

This scenario has been well-captured by the above media report, which states: “AbbVie leadership has also been accused of creating a ‘patent thicket’ in its battle to stave off biosimilar competitors to Humira.” Boehringer Ingelheim is among the few still fighting AbbVie’s ‘patent thicket’ hoping to launch its Humira biosimilar - Cyltezo, even after receiving US-FDA approval on August 29, 2017. ‘Top biosimilar makers, including Novartis’ Sandoz unit and Mylan, have settled their own Humira patent fights with deals that put off launches until 2023,’ the report indicated.

In its favor: AbbVie says, Cyltezo infringes about 70 patents the company currently holds for Humira. Whereas, ‘Boehringer’s lawyers say AbbVie’s copious patents overlapped in an attempt to exclude competitors from the market.’ Notably, in March this year, New York’s UFCW Local 1500 Welfare Fund, reportedly, also accused AbbVie of using overlapping patents to exclude biosimilars.

‘Patent thicket’ – a way of ‘evergreening’ beyond 20 years patent term:

Much concern is being raised about various ploys of especially by the drug MNC and their lobby groups – directly or under a façade, to delay entry of cheaper generic drugs for greater patient access. Mostly the following two ways are followed for patent ‘evergreening’ beyond the term of 20 years:

• ‘Incremental innovation’ of the existing patented drugs through molecular manipulation,…continue reading…