Amphastar Pharmaceuticals has a total of 211 patents globally, out of which 125 have been granted. Of these 211 patents, more than 45% patents are active. China is where Amphastar Pharmaceuticals has filed the maximum number of patents, followed by United States of America and Europe. Parallelly, United States of America seems to be the main focused R&D centre and also is the origin country of Amphastar Pharmaceuticals.
Amphastar Pharmaceuticals was founded in the year 1996. The Company’s specialty is pharmaceutical company that is engaged in the development manufacture and marketing of generic.
Do read about some of the most popular patents of Amphastar Pharmaceuticals which have been covered by us in this article and also you can find Amphastar Pharmaceuticals patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Amphastar Pharmaceuticals patent portfolio.
How many patents does the founder and the CEO of Amphastar Pharmaceuticals have?
The founder Mary Z. Luo has 1 patent and CEO Jack Zhang has 0 patents.
How many patents does Amphastar Pharmaceuticals have?
Amphastar Pharmaceuticals has a total of 211 patents globally. These patents belong to 73 unique patent families. Out of 211 patents, 96 patents are active.
How Many Patents did Amphastar Pharmaceuticals File Every Year?
Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.
| Year of Patents Filing or Grant | Amphastar Pharmaceuticals Applications Filed | Amphastar Pharmaceuticals Patents Granted |
| 2023 | 2 | 7 |
| 2022 | 4 | 4 |
| 2021 | 22 | 7 |
| 2020 | 10 | 15 |
| 2019 | 19 | 17 |
| 2018 | 13 | 1 |
| 2017 | 2 | – |
| 2016 | 10 | 2 |
| 2015 | 36 | 3 |
| 2014 | 2 | 9 |
| 2013 | – | 8 |
Explore the top-performing drugs that dominate the Pharmaceutical Industry
| Patent Number | Company | Product | Brand | Revenue | Patent Expiry Date |
| US9174975 | Sumitomo Pharma | Lurasidone Hydrochloride | Latuda | $1.75B | Jun-26 |
| US7612199 | Alfasigma | Rifaximin | Xifaxan | $1.64B | Nov-24 |
| US7902206 | Alfasigma | Rifaximin | Xifaxan | $1.64B | Nov-24 |
| US8158644 | Alfasigma | Rifaximin | Xifaxan | $1.64B | Nov-24 |
| US7371727 | Ironwood Pharma | Linaclotide | Linzess | $1.00B | Mar-25 |
Want to know which drugs are making over $1 Billion annually?
How many Amphastar Pharmaceuticals patents are Alive/Dead?
How Many Patents did Amphastar Pharmaceuticals File in Different Countries?
Countries in which Amphastar Pharmaceuticals Filed Patents
| Country | Patents |
| China | 46 |
| United States of America | 43 |
| Europe | 17 |
| Japan | 10 |
| Australia | 8 |
| Mexico | 7 |
| Austria | 7 |
| Germany | 7 |
| India | 7 |
| Canada | 6 |
| Russian Federation | 6 |
| Brazil | 4 |
| Denmark | 3 |
| Indonesia | 2 |
| Ukraine | 2 |
| Spain | 2 |
| Poland | 2 |
| Portugal | 2 |
| Estonia | 1 |
| Cyprus | 1 |
| Slovenia | 1 |
| Taiwan | 1 |
| Hong Kong (S.A.R.) | 1 |
Where are Research Centres of Amphastar Pharmaceuticals Patents Located?
10 Best Amphastar Pharmaceuticals Patents
US6551298B1 is the most popular patent in the Amphastar Pharmaceuticals portfolio. It has received 129 citations so far from companies like Intelliject, Inc., Taewoong Medical and Kaleo.
Below is the list of 10 most cited patents of Amphastar Pharmaceuticals:
| Publication Number | Citation Count |
| US6551298B1 | 129 |
| US6793076B1 | 70 |
| US6827479B1 | 42 |
| US8367734B1 | 30 |
| CN202516542U | 29 |
| US7219816B1 | 21 |
| CN201848251U | 18 |
| CN201885525U | 17 |
| WO2007079252A2 | 13 |
| US20070154546A1 | 12 |
What Percentage of Amphastar Pharmaceuticals US Patent Applications were Granted?
Amphastar Pharmaceuticals (Excluding its subsidiaries) has filed 47 patent applications at USPTO so far (Excluding Design and PCT applications). Out of these 39 have been granted leading to a grant rate of 90.7%.
Below are the key stats of Amphastar Pharmaceuticals patent prosecution at the USPTO.
Which Law Firms Filed Most US Patents for Amphastar Pharmaceuticals?
| Law Firm | Total Applications | Success Rate |
| Lewis Roca Rothgerber Christie | 11 | 63.64% |
| Christie Parker & Hale | 8 | 100.00% |
| Patent Law Inc | 7 | 100.00% |
| Albert O Cota | 5 | 100.00% |
| Bayramoglu Law Offices Llc | 4 | 100.00% |
| Dority & Manning P A | 3 | 0% |
| Christie Parker And Hale | 2 | 100.00% |
| Ice Miller Llp | 2 | 100.00% |
| Christic Parker & Hale | 1 | 100.00% |
| James S Burns | 1 | 100.00% |
What are Amphastar Pharmaceuticals key innovation segments?
What Technologies are Covered by Amphastar Pharmaceuticals?
The chart below distributes patents filed by Amphastar Pharmaceuticals