It is moderately concentrated but not dominated by a single player. The top 5 assignees hold 30.4% of the 542 records in scope, and the top 10 hold 45.4%, which leaves more than half the corpus spread across a long tail of 90 other ranked companies. The leading assignee alone holds 41 records, well ahead of fifth place at 25, so there is a clear leader, but the field below the top tier is genuinely open to new entrants.

No, the trend has flattened. Filings peaked at 26 records in 2017, held at 26 again at the 2022 midpoint, and have since declined toward 4 in the most recent partial year. Because publication lags filing by roughly 18 months, the last one to two years will likely fill in somewhat as more records publish, but the multi-year flat stretch before that is a genuine signal that filing activity has plateaued rather than accelerated.

This Glaxo Group record covers a process for preparing a specific piboserod-based pharmaceutical composition using dry granulation, preferably roller compaction followed by milling to a target particle size. It is narrow: the claims are tied to a specific active ingredient and salt form combined with a named dry granulation route, so it does not block the use of roller compaction as a general process for other actives. Anyone working with a different API or a materially different excipient combination is unlikely to fall within its scope, but it is a useful template for how narrow, ingredient-specific process claims are typically drafted in this field.

The most-cited record in the dataset is US5585115A, an excipient compressibility patent with 287 citations, followed by related excipient patents US5725883A and US6103219A and a compaction-density measurement patent, US6122601A. High citation counts inside a searched corpus tend to favour older filings simply because they have had more years to accumulate citations, so these figures are best read as a measure of influence on later filings rather than a statement that these patents remain the most commercially important today.

The clearest openings sit in narrower technical branches that appear in the search scope but carry comparatively few dedicated records: ribbon density uniformity sensing, roll surface texturing for fines control, in-line fines recycle control loops, and sealing systems for moisture-sensitive APIs. These sit adjacent to the heavily filed A61K medicinal-preparations core (76.4% of records) rather than inside it, which is consistent with a field where the formulation chemistry is well covered but the process-control and hardware layer is not.