If you ever needed proof that timing is everything, the Taxotere litigation has you covered.
Last month, a court denied summary judgment to the brand manufacturer, finding that it allegedly acquired “newly acquired information” post-dating Taxotere’s original FDA approval in 1996. This month, however, the very same court granted summary judgment to the manufacturers of docetaxel, the active ingredient in Taxotere, whose products were approved in 2011 via §505(b)(2) of the FDCA.
The key distinction—the clock didn’t start running in 1996 for everyone. In re Taxotere (Docetexal) Eye Injury Products Liability Litigation, 2026 WL 123664 (E.D. La. Jan. 16, 2026).
To start, a §505(b)(2) approval is something of a hybrid between a New Drug Application (brands) and an Abbreviated New Drug Application (generics). It is available for drugs that differ from the RLD (reference listed drug) “in ways that are slight enough for the manufacturer to still rely on the RLD’s safety and efficacy data.” The manufacturer submits an NDA, but it “need contain only that information needed to support the modification(s) of the listed drug. Unlike [generic] drugs, §505(b)(2) drugs are not required to use the exact same labeling as the RLD.” Id. at *2. So yes we are talking about generics. No, we are not talking about Mensing preemption.
The labels for both Taxotere and docetexal warned of “excessive tearing which may be attributable to lacrimal duct obstruction,” but plaintiffs argue it should have said more. Such claims are preempted, however, unless plaintiffs can point to newly acquired information that would have permitted a unilateral label change (i.e. without the FDA’s approval) under the FDA’s Changes Being Effected (“CBE”) regulation. In the case of docetexal, plaintiffs argued that information that post-dated the original Taxotere approval but pre-dated the §505(b)(2) approvals should be considered newly acquired. Which if allowed would almost certainly have led the court to reach the same conclusion it did in December.
But here’s where we get a little help from the Fifth Circuit and the first Taxotere MDL. In Hickey v. Hospira, 102 F.4th 748 (5th Cir. 2024), which we talk about here, the appellate court found that “the newly acquired information inquiry centers on what happens after the FDA approves a §505(b)(2) drug.” In re Taxotere, 2026 WL 123664, *9 (emphasis in original). While the §505(b)(2) manufacturers can rely on the brand manufacturer’s safety and efficacy data, they don’t have a “right of reference” to it, meaning they don’t get to see all of it. You can’t say what is “new” if you don’t have a point of reference to compare it to. Id. at *8. That’s why their clock did not start in 1996. Instead, the Fifth Circuit said the proper “baseline comparator” for §505(b)(2) manufacturers is the “publicly available literature that existed prior to the §505(b)(2) manufacturers’ approval.” Id. at *10.
Once the right timing for the baseline was set, the rest of the decision is a standard CBE analysis—did the §505(b)(2) manufacturers have newly acquired information that post-dated the 2011 approval of their drugs that would have supported a unilateral label change. Id. Without going into the details of the science, the answer was no. Id. at *10-14.
Under the CBE regulation, post-approval information qualifies as “newly acquired” only if it reveals “risks of a different type, or greater severity or frequency” than what was already known and disclosed at the time of approval. Id. at *10. That’s a high bar—and intentionally so. The FDA, not juries, decides what risks warrant warnings, and manufacturers can only change labels unilaterally when genuinely new safety information emerges.
Here, the science tells the same story it did before approval—just with more footnotes. And no, calling old data “new” doesn’t magically make it so. Relying on new articles that “summarize pre-approval literature” is simply repackaging existing knowledge. Id.at *13. If the post-approval literature confirms what was already known, that’s called confirmation, not innovation. And confirmation does not authorize a CBE label change. Because the manufacturers could not have changed their labels without prior FDA approval, plaintiffs’ state-law failure-to-warn claims collapse under impossibility preemption.
While different, the two Taxotere rulings are not contradictory. They’re chronological. And while we think the December ruling was strained on what constitutes newly acquired information, what may count for a product approved in 1996 does not automatically remain “new” forever. By 2011, the FDA had already seen it, digested it, and approved products with that knowledge in hand. When nothing new emerges after approval, manufacturers—brand or generic—cannot be faulted for failing to warn about risks the FDA already considered.