Castrol has a total of 1258 patents globally, out of which 552 have been granted. Of these 1258 patents, more than 40% patents are active. Europe and the USA is where Castrol has filed the maximum number of patents, followed by the United Kingdom and China. Parallelly, The United Kingdom seems to be the main focused R&D center and also USA is the origin country of Castrol.
Castrol is the subpart of BP was founded in 1899 by Charles Wakefield. The Company operates as an oil-producing firm. The Company manufactures, distributes, and markets lubricating oils, greases, automatic transmission fluids, and other related products. Castrol serves automotive, industrial, marine, aviation, and oil exploration customers worldwide.
Do read about some of the most popular patents of Castrol which have been covered by us in this article and also you can find Castrol patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Castrol patent portfolio.
How many patents does the Founder and CEO of Castrol have?
The Founder Charles Wakefield has 105 patents and the CEO Mandhir Singh has 0 patents.
How many patents does Castrol have?
Castrol has a total of 1258 patents globally. These patents belong to 357 unique patent families. Out of 1258 patents, 507 patents are active.
How Many Patents did Castrol 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 | Castrol Applications Filed | Castrol Patents Granted |
| 2023 | 2 | 5 |
| 2022 | 17 | 45 |
| 2021 | 41 | 49 |
| 2020 | 39 | 58 |
| 2019 | 98 | 64 |
| 2018 | 78 | 51 |
| 2017 | 127 | 35 |
| 2016 | 155 | 18 |
| 2015 | 125 | 24 |
| 2014 | 49 | 13 |
| 2013 | 73 | 20 |
| 2012 | 42 | 11 |
| 2011 | 41 | 15 |
How many Castrol patents are Alive/Dead?
Worldwide Patents
How Many Patents did Castrol File in Different Countries?
Countries in which Castrol Filed Patents
| Country | Patents |
| Europe | 118 |
| United States Of America | 118 |
| China | 97 |
| United Kingdom | 84 |
| Japan | 83 |
| India | 81 |
| Australia | 54 |
| Brazil | 49 |
| Canada | 44 |
| Mexico | 43 |
| Korea (South) | 38 |
| Russia | 38 |
| Germany | 36 |
| Indonesia | 36 |
| Malaysia | 33 |
| South Africa | 27 |
| Singapore | 20 |
| Viet Nam | 17 |
| Poland | 14 |
| Saudi Arabia | 13 |
| Hong Kong (S.A.R.) | 12 |
| Spain | 11 |
| Austria | 9 |
| Philippines | 8 |
| Turkey | 7 |
| Italy | 6 |
| Portugal | 6 |
| Denmark | 5 |
| United Arab Emirates | 5 |
| Norway | 5 |
| New Zealand | 4 |
| Peru | 2 |
| Argentina | 2 |
| Uruguay | 1 |
| Czech Republic | 1 |
| Taiwan | 1 |
| Brunei | 1 |
| Kazakhstan | 1 |
| Bosnia and Herzegovina | 1 |
| Iceland | 1 |
| Ukraine | 1 |
| Slovenia | 1 |
| Tunisia | 1 |
Where are the Research Centers of Castrol Patents Located?
10 Best Castrol Patents
US6410652B1 is the most popular patent in the Castrol portfolio. It has received 47 citations so far from companies like Chevron Oronite Company, Honam Petrochemical Corporation, and Aventis Pharma Deutschland Gmbh.
Below is the list of 10 most cited patents of Castrol:
| Publication Number | Citation Count |
| US6410652B1 | 47 |
| US7371713B2 | 40 |
| WO2003093783A1 | 33 |
| US20150292372A1 | 32 |
| WO2008075016A1 | 32 |
| US6686321B2 | 27 |
| WO2007148047A1 | 26 |
| US8099207B2 | 25 |
| US20100200609A1 | 25 |
| WO2014207235A1 | 23 |
How many inventions of other companies were rejected due to Castrol patents?
The statistics below share strategic R&D insights. It tells the companies that were trying to protect inventions similar to Castrol’s invention. They couldn’t because Castrol had protected those before them.
Examiners at the USPTO referred 34 Castrol patents in 100 rejections (35 USC § 102 or 35 USC § 103 types).
The top citing companies in the Castrol patent portfolio are Huizhou Kimree Technology Co and Rai Strategic Holdings.
List of the Companies whose Patents were rejected citing Castrol –
| Company | Number of Patent Applications that faced Rejection Citing Castrol Patents | Number of Rejections (102 & 103) |
| Lubrizol | 3 | 8 |
| Vestas Wind Systems | 3 | 6 |
| Exxonmobil | 3 | 5 |
| Technical Chemical Company Inc | 2 | 5 |
| Circuloil Ltd | 2 | 4 |
| Idemitsu Kosan | 2 | 4 |
| Caterpillar Inc | 2 | 3 |
| IBM | 2 | 2 |
| LG Chem | 1 | 2 |
| Noria Corporation | 1 | 2 |
Count of 102 and 103 Type Rejections based on Castrol Patents
Top Castrol Patents used in Rejecting Most Patent Applications
| Patent Number | Count of Rejected Applications |
| US9360393B2 | 4 |
| US8618028B2 | 3 |
| US20020016746A1 | 3 |
| US10584680B2 | 2 |
| US6410652B1 | 2 |
| US10697336B2 | 2 |
| US10935538B2 | 2 |
| US6585015B2 | 2 |
| US10190070B2 | 2 |
| US9127232B2 | 2 |
| US9869219B2 | 2 |
| US10167755B2 | 2 |
| US20100200609A1 | 2 |
| US20060138072A1 | 1 |
| US7981847B2 | 1 |
What Percentage of Castrol US Patent Applications were Granted?
Castrol (Excluding its subsidiaries) has filed 116 patent applications at USPTO so far (Excluding Design and PCT applications). Out of these 79 have been granted leading to a grant rate of 71.8%.
Below are the key stats of Castrol patent prosecution at the USPTO.
Which Law Firms Filed Most US Patents for Castrol?
| Law Firm | Total Applications | Success Rate |
| Mcdonnell Boehnen Hulbert & Berghoff Llp | 38 | 81.58% |
| Nixon & Vanderhye Pc | 15 | 53.33% |
| Shawn Smith | 13 | 61.54% |
| Mbhb Bp Corporation North America Inc | 12 | 50.00% |
| Bacon & Thomas | 9 | 62.50% |
| Nixon & Vanderhye | 8 | 66.67% |
| Mcandrews Held & Malloy Ltd | 4 | 75.00% |
| Bp America Inc | 2 | 0.00% |
| Charles R Wolfe Jr | 2 | 100.00% |
| George L Boller | 2 | 100.00% |