In downstream oil & gas, petroleum: any person, whether natural or juridical, engaged in the sale of petroleum products, whether in bulk or retail [Section 3(cc), Downstream Oil Industry Deregulation Act of 1998 IRR]
In downstream oil & gas, LPG: a duly authorized natural or juridical person engaged in the sale of LPG, whether in bulk or in retail, under its own trademark or trade name [Section 4(ll), LPG Industry Regulation Act of 2021; Section 3.1(mm) of DOE-DTI Joint Department Circular No. JDC2022-05-001, Rules and Regulations Implementing Republic Act No. 11592]
In downstream oil & gas, LPG: a duly authorized natural or juridical person engaged in the sale of LPG, whether in bulk or in retail, under its own Trademark or trade name; [Section 3.1(ss), DOE Department Circular No. DC2022-11-0037, Guidelines on the Registration and Issuance of License to Operate to Qualified DOE-Regulated LPG Industry Participants and Penalizing Certain Prohibited Acts]
Note: The definition under DOE Department Circular No. DC2022-11-0037 states that it is alternatively referred to as Trademark Owner. The latter term however has a different definition.