During the past 20 years, BYD Group's annual patent applications have grown notable, peaking at in 2018. The low number of patent applications in 2020 and 2021 did not represent a decline, as it could take up to 18 months to publish a patent.
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GreyB Research. (June 27, 2022). Number of patents filed by BYD Group from January 1, 2002 to January 6, 2022 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1317109/number-of-patents-filed-byd/
GreyB Research. "Number of patents filed by BYD Group from January 1, 2002 to January 6, 2022." Chart. June 27, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1317109/number-of-patents-filed-byd/
GreyB Research. (2022). Number of patents filed by BYD Group from January 1, 2002 to January 6, 2022. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1317109/number-of-patents-filed-byd/
GreyB Research. "Number of Patents Filed by Byd Group from January 1, 2002 to January 6, 2022." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 27 Jun 2022, /statistics/1317109/number-of-patents-filed-byd/
GreyB Research, Number of patents filed by BYD Group from January 1, 2002 to January 6, 2022 ÌÇÐÄÆƽâ°æ, /statistics/1317109/number-of-patents-filed-byd/ (last visited July 31, 2026)
Number of patents filed by BYD Group from January 1, 2002 to January 6, 2022 [Graph], GreyB Research, June 27, 2022. [Online]. Available: /statistics/1317109/number-of-patents-filed-byd/
