Episode 1 of 2

Bayer Registers Aspirin Trademark

When
1899
Where
Germany-level institutional context of Bayer's trademark registration
Part of
Felix Hoffmann patents Aspirin; Bayer registers trademark

By 1899, Bayer's trademark Aspirin was registered worldwide for its brand of acetylsalicylic acid, which the company was selling globally.

By 1899, Bayer had named the drug Aspirin and was selling it around the world. The trademark was registered worldwide for Bayer's brand of acetylsalicylic acid. This status formalized the commercial identity of the drug, distinct from the generic compound. The legacy row's claim that Hoffmann personally patented the drug is corrected: the passages document Bayer's worldwide trademark registration but do not specify patent filing details.

Sources

  1. Aspirin Wikipedia, revision of 2026-10-05
  2. Bayer Wikipedia, revision of 2026-09-25

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.