Did Enanta Lawsuit and PADCEV Trial Success Just Shift Pfizer's (PFE) Investment Narrative?

Simply Wall St
  • In recent days, Enanta Pharmaceuticals initiated a lawsuit against Pfizer in the European Unified Patent Court, alleging infringement of a newly granted COVID-19 antiviral patent, while Pfizer and Astellas announced positive Phase 3 results for PADCEV plus KEYTRUDA in muscle-invasive bladder cancer patients not eligible for cisplatin-based therapy.
  • This combination of promising cancer trial results and fresh EU patent litigation marks a pivotal period as Pfizer's innovation meets potential hurdles in its COVID-19 portfolio.
  • We'll examine how the successful PADCEV and KEYTRUDA trial could update Pfizer's outlook in light of increasing legal complexities.

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Pfizer Investment Narrative Recap

Being a Pfizer shareholder means believing in the company’s ability to deliver long-term value by expanding its late-stage pipeline, especially through breakthroughs in oncology and rare diseases, despite facing major risks like patent expirations and tightening regulatory policies. The recent lawsuit from Enanta Pharmaceuticals over Paxlovid in the EU highlights new legal uncertainties, but for now, the biggest short-term catalyst remains the progress of innovative drugs like PADCEV and KEYTRUDA, while the main risk continues to be looming patent cliffs. Overall, the near-term impact of this litigation on Pfizer’s outlook appears limited, yet investors should stay alert as legal challenges could escalate.

The August 12 announcement of positive Phase 3 results for PADCEV plus KEYTRUDA in muscle-invasive bladder cancer is particularly relevant, as it underpins Pfizer's opportunity to offset potential revenue loss from patent expirations with strong new clinical trial outcomes. These results not only reinforce confidence in Pfizer’s oncology pipeline but also support a key catalyst, successful new product launches that could help bridge the gap created by expiring exclusivity on high-revenue drugs.

But while this promising progress in cancer therapies could energize Pfizer’s growth story, investors should also be mindful that new patent litigation...

Read the full narrative on Pfizer (it's free!)

Pfizer's outlook anticipates $59.7 billion in revenue and $13.2 billion in earnings by 2028. This reflects a 2.2% annual revenue decline and a $2.5 billion increase in earnings from the current $10.7 billion.

Uncover how Pfizer's forecasts yield a $28.77 fair value, a 11% upside to its current price.

Exploring Other Perspectives

PFE Community Fair Values as at Aug 2025

While some analysts see regulatory hurdles and expiring patents as constraining, the most bearish expect revenues to fall to US$56,100,000,000 by 2028. This perspective is much more pessimistic than consensus, showing how expectations for new legal risks and competition could impact forecasts. It’s useful to consider these alternative viewpoints, as news events like this lawsuit may reshape what you think the future holds for Pfizer.

Explore 30 other fair value estimates on Pfizer - why the stock might be worth over 2x more than the current price!

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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